Real suffered a heavy defeat in last week's semi-final first leg in Germany as Robert Lewandowski netted four goals in an inspirational performance.
However, Spanish defender Ramos does not think the tie is over yet and is confident Real can stage a famous comeback if they play to their best.
"We are eager for revenge after the result in Dortmund," he said. "We are playing for our life and the fans will get the game going from the first minute.
"Mentally the team is confident they can overcome the tie. We want to do our talking on the pitch.
"Playing at home is a bonus because the fans will be with us to the death. We are going to have wings.
"We can achieve the comeback. In football anything can happen. What is clear is we must leave everything on the field. We have to stay focused.
"Intensity and aggressiveness is the key. The tie is complicated but we will give our all."