Fabregas admitted that the defeat hit the morale in the Barca squad but that they are now ready to perform once more on the big stage.
"As a team, we are feeling okay," UEFA.com quotes his as saying. "The Milan loss [affected us] with the defeats to Real Madrid in the Copa del Rey and La Liga.
"However, this group of players is more than capable of producing the goods in the big matches, we have shown we can do so in the past and nobody doubts that we can do it again."
The second leg takes place on Tuesday night.