Liverpool need to pull off a big turnaround to progress but they've done it before in Europe, just think back to the semi-finals against Barcelona in 2019.
Boss Jurgen Klopp said: "What's important is the performance, we have to play like ourselves and play as good as we can, we have to try to win the game and then we will see what the result leads us to.
"With the quality that Real Madrid has you have to defend on your absolutely highest level and that is what we didn't do in the first leg.
"It's always about winning football games and that is the target for tomorrow night. If that will end up in a comeback, I have no idea.
"We have to be in a mood to start believing again and, if that happens and we can see that it's possible, then we have a chance, but it's still incredibly difficult."