Real Madrid goalkeeper Iker Casillas feels the home crowd will be a factor tonight against Champions League opponents Lyon.
The tie is well poised at 1-1 from the first leg.
Casillas said: "We know that the environment in the Champions League is different and we need them (the crowd).
"The best moment I remember from the Champions League was a Real Madrid-Bayern in which we had to overcome a 2-1 deficit. The crowd turned to the team.
"We know the Champions League environment is different, we need the public to get behind us. People have to help us and, together, be in the quarter-finals."
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