Lionel Messi had looked like giving the Spanish side a 3 - 1 lead to take back to the Nou Camp after being felled by Pablo Zabaleta .
Hart pushed away his spot - kick and City breathed a sigh of relief .
Lionel Messi had looked like giving the Spanish side a 3 - 1 lead to take back to the Nou Camp after being felled by Pablo Zabaleta but Hart pushed away his spot - kick and City breathed a sigh of relief .