Cristiano Ronaldo has admitted that Real Madrid require a "perfect night" to reach the semi-finals of the Champions League.

Los Blancos head into Tuesday night's second leg at the Bernabeu against Wolfsburg up against a 2-0 deficit.

"It must be a perfect night. All aspects are important. Those of us on the pitch need to run, fight and play with intensity for 90 minutes," Ronaldo told the club's official website.

"Obviously, with the fans helping and supporting us it will be easier for us. It is also important to remain calm in certain situations.

"We need patience and to know how to suffer for the win. The key objective is getting through to the next round."

Ronaldo was speaking after he had scored once in a 4-0 win over Eibar yesterday afternoon.