Chelsea somehow fluked a 1-0 win in the first leg between the pair after being completely outplayed at Stamford Bridge.
They will need equal, or if anything, more luck than even that at the Nou Camp if they are to make progress to the final – something which is still highly unlikely.
Cech said: “We’ve done well in the past there and need to reproduce the same kind of performance that we did and like we have before.
“It will be really important to score an away goal as well but we seem always to score there and, hopefully, we can replicate that.”
