Bayern Munich may have been ravaged by injuries ahead of the Champions League game at Porto on Wednesday but the squad's sense of unity is stronger, Thomas Muller said on Tuesday. The Bavarians, chasing three titles this season, are without Arjen Robben, Franck Ribery, Bastian Schweinsteiger and David Alaba among others for the quarter-final, first leg in Portugal. 'For the (recent) games against Borussia Dortmund and Bayer Leverkusen we had two matches where we played with a decimated squad and with few options,' Muller said. Bayern Munich striker Thomas Muller believes his team are stronger for their recent injury troubles . Muller celebrates his goal in Bayern's 3-0 Bundesliga win over Eintracht Frankfurt at the weekend . Bayern keeper Manuel Neuer whispers in Muller's ear during their press conference before the Porto game . Bayern beat Dortmund in the Bundesliga before edging past Leverkusen in the German Cup last eight on penalties and looked unaffected by the absences. They also beat Eintracht Frankfurt 3-0 on Saturday. 'In those games we came closer together as a group, as a unit, and that will obviously help us against Porto,' said Muller. 'Now it is not about the injuries but about building a strong unit on the pitch with the players who are there. We are confident and hopefully we can score a few goals.' Five-times champions Bayern will rely heavily on the scoring prowess of Muller and Robert Lewandowski in the absence of Robben and Ribery as they look to become the first team to beat Porto in the Champions League this season. Bayern coach Pep Guardiola is eyeing up a Treble of Bundesliga, DFB-Pokal and Champions League . Bayern celebrate with their supporters at the end of Saturday's 3-0 win over Eintracht Frankfurt . The injured Arjen Robben has been forced to watch recent games from the stands . Franck Ribery, seen here scoring against Shakhtar in the last round, is also sidelined through injury . Bastian Schweinsteiger also suffered an ankle injury during Bayern's recent game with Borussia Dortmund . April 15 Porto (A) Champions League Quarter-final, first leg . April 18 Hoffenheim (A) April 25 Porto (H) Champions League Quarter-final, second leg . April 25 Hertha Berlin (H) April 28 Borussia Dortmund . DFB-Pokal semi-final . Twice winners Porto won four matches and drew twice in the group stage before crushing Basel 5-1 on aggregate in the round of 16. 'I am surprised with their level and we will need two good games to reach the semi-finals,' said Bayern coach Pep Guardiola. 'They play an open game ... they have physical midfielders but with great quality. That is also their biggest asset. Their individual quality.' Guardiola added there was no point talking about the Bayern injuries, saying he would simply try his best with the players at his disposal. 'The last two weeks we talked about this a lot but we have this situation and we are here with these 14 players and we will try our best. That's what it is and I won't complain,' he explained.
Bayern are in Portugal to face Porto in Champions League quarters . Robben, Ribery, Schweinsteiger and Alaba are all out through injury . But Muller believes these problems have brought the team closer together . Pep Guardiola's side have looked untroubled by their absence . They have a big lead in the Bundesliga and progressed in the Cup .