Luis Suarez paid back another huge chunk of his transfer fee at the Nou Camp with the goal that won the Clasico — and quite possibly the Spanish league title for Barcelona. Running on to a long pass forward by Dani Alves, Suarez took the ball brilliantly in his stride and, with both Sergio Ramos and Pepe closing in, he found Iker Casillas’ far corner with well-struck shot. 'It's the most important goal I have scored for the club so far,' he said. 'And of course it means even more because of who it was against. I tried to make the most of the space I found between the defenders and to get the shot away as quickly as I could. Luckily it worked out.' Luis Suarez scored his first goal in El Clasico as Barcelona edged out Real Madrid 2-1 at the Nou Camp on Sunday . Suarez scored the winner past the outstretched leg of Pepe and the helpless Iker Casillas in the 56th minute at the Nou Camp . Suarez kneels on the Nou Camp turf and clenches his fists in celebration after scoring in Sunday night's victory over rivals Real Madrid . Barcelona celebrate Suarez's goal that settled the game and moved them four points clear in the La Liga title race . Suarez's first goal in El Clasico could prove to be crucial at the end of the season as it gave Barcelona a commanding four-point lead . Cristiano Ronaldo and Karim Benzema look on as they watched Real Madrid's title hopes suffer a huge blow at the Nou Camp . Lionel Messi failed to shine under the lights at the Nou Camp as he struggled to make his mark on the game . Barcelona: Bravo, Alves, Pique, Mathieu, Alba, Rakitic (Busquets 76), Mascherano, Iniesta (Xavi 80), Messi, Suarez, Neymar (Rafinha 85). Subs not used: Ter Stegen, Pedro, Bartra, Adriano. Goals: Mathieu 19, Suarez 56. Booked: Alves, Alba, Mascherano, Iniesta, Suarez. Real Madrid: Casillas, Carvajal, Pepe (Varane 73), Ramos, Marcelo, Modric (Borges 88), Kroos, Isco (Jese 80), Bale, Ronaldo, Benzema. Subs not used: Navas, Hernandez, Arbeloa, Illarramendi. Goals: Ronaldo 31. Booked: Carvajal, Pepe, Ramos, Modric, Isco, Ronaldo. Attendance: 98,760. Referee: Antonio Miguel Mateu Lahoz. The win puts Barcelona four points clear with only 10 games left and after last year’s disappointment with Liverpool, Suarez could now be in line for a league winners’ medal in Spain. But he added: 'There is still a long way to go and we know it will be difficult. We have to make the most of the advantage we now have. But we know we can't relax especially against a rival as strong as Madrid.' Jubilant Barca coach Luis Enrique praised Suarez saying: ‘He finished the goal like very few players can. He is a striker who can score goals like this, but he is also technical enough to play the football we play and physical enough to compliment the other players in the side. We signed him for nights like this.’ The game looked to be slipping away from Barcelona after they were made to suffer in the first half. Luis Enrique admitted: ‘The goal calmed us down a lot in the second half. It’s a big a win against our eternal rival but we have a lot of difficult games to go before the league is won. 'The win means more because this is a very good Madrid side.’ Until Suarez struck the night had belonged to Cristiano Ronaldo, who responded to a week of global adulation for Lionel Messi by equalising in the first half to silence the Camp Nou after Jeremy Mathieu opened the scoring. Ronaldo’s every touch was booed — even from his first run down the left inside 60 seconds. It only took Messi 10 minutes to mark up his first nutmeg, sending the ball through Toni Kroos’ legs, but it was Real with a pumped-up Ronaldo who made much of the early running and he hit the bar from Karim Benzema’s cross. At the other end, Pepe and Suarez clashed and Barcelona were awarded a free-kick. Messi took it and, powering in ahead of Ramos, Mathieu headed past Casillas for his first Barcelona goal. The hosts should have doubled their lead but Neymar made a mess of a Suarez assist and they paid the price as Real Madrid scored with their next attack. Luka Modric played the ball to Karim Benzema, the Frenchman’s flick found Ronaldo in space and he swept the ball past Claudio Bravo. Suarez was booked for leaving his foot in on Pepe, who had already gone in late on the Uruguayan. Jeremy Mathieu headed Barcelona into the lead at the Nou Camp with 19 minutes played in the La Liga showdown . The Frenchman got in front of Real Madrid defender Sergio Ramos to head his team into the lead at the Nou Camp . Real Madrid goalkeeper Casillas watches on as Mathieu's header in the 19th minute finds the back of his net . Mathieu celebrates with his Barcelona team-mates after giving his team the lead in El Clasico . Ronaldo and Pique challenge for the ball in the air while Ivan Rakitic attempts to hold off Gareth Bale in the area as Ronaldo watches on . Barcelona were hanging on before half-time and Gareth Bale thought he had scored from Ronaldo’s flicked header — only for the goal to be disallowed because the Portuguese was offside. Five minutes into the second half Benzema almost put Real ahead after a fine move but was somehow denied by Bravo. Suarez had been quiet since his booking in the first half but, when Alves played him through with a brilliant first touch, he controlled the ball inside the area and rifled into the far corner. Ronaldo levelled the scores for Real Madrid just before half-time at the Nou Camp when he prodded the ball into the back of the net . Ronaldo runs away to celebrate after beating Barcelona goalkeeper Claudio Bravo to draw Real Madrid level . The Portuguese forward is congratulated by Toni Kroos and Dani Carvajal after his equaliser in the first half . Ronaldo had earlier rattled the crossbar of Bravo with his volley from a cross at the far post . There was still work to do and Barcelona desperately needed the third goal. Neymar should have scored it twice but both times shot wide, with Suarez better placed on the first occasion. Suarez could also have scored again wriggling away from Dani Carvajal only to pull his shot wide. Real Madrid kept going forward and as with the very first chance of the second period Benzema was denied by Bravo. Jordi Alba then steamed through on to a Messi pass only for the ball to be cleared for a corner. From the kick Suarez sent a shot high over Casillas’ bar. It now seemed as if Barcelona were chasing the late goal and the Spain keeper again saved from Messi. Suarez restored Barcelona's lead early in the second half with a clinical finish past Casillas into the bottom corner . Real Madrid goalkeeper Casillas was left with no chance by the Barcelona striker's clinical finish into the bottom corner . Uruguayan striker Suarez celebrates scoring Barcelona's second goal to give them the lead again in El Clasico . Suarez celebrates his first goal in El Clasico since moving to Spain from Liverpool in the summer of 2014 . There were 11 bookings on the night and Javier Mascherano and Ronaldo clattered into each other midway through the second half. But the game was more 'crash bang wallop' than containing any of the bad blood of previous meetings. Suarez thrives in games this frenetic and in that sense it was no surprise his contribution was decisive. He may even have decided the title race. Real Madrid coach Ancelotti said: ‘The league is more difficult now. We have to keep going and play as we did in the first half for 90 minutes. I don’t think we made any mistakes when you have Suarez against you then he can do that. He finds the space and when the right pass comes he can finish. Our heads are down but we still have a lot to play for.’ Neymar reacts after missing a chance from point-blank range and gifting Real Madrid goalkeeper Casillas with an easy save . Gareth Bale had the ball in the back of the net for Real Madrid, but the assistant referee had already raised his offside flag . Real Madrid forward Ronaldo is shown a yellow card by the referee during the first half at the Nou Camp . Barcelona forward Neymar and Real Madrid's Welsh winger Bale are pulled apart by the referee after an exchange . Suarez remonstrates with referee Antonio Miguel Matey Lahoz after being booked in the Clasico . A huge mosaic from the 95,000 crowd at the Nou Camp greeted the players as they entered the pitch for the La Liga battle .
Luis Suarez scored the decisive goal as Barcelona edged out Real Madrid at the Nou Camp . El Clasico victory puts Barcelona four points clear in La Liga title race with 10 games remaining . Jeremy Mathieu gave Barcelona the lead in the 19th minute with a header past Iker Casillas . Cristiano Ronaldo equalised for Real Madrid before half-time at the Nou Camp . Suarez scored the winner in the 56th minute to secure all three points for Luis Enrique's side . CLICK HERE to see how all the action unfolded . PLAYER RATINGS: Gerard Pique delivers a world-class display, but Gareth Bale flops .