Casillas was missing due to a hand injury.
Of teammate Ronaldo, he said: "He is showing that he is a very important player for us. He is our focal point and in these matches he has shown how good he is. Ronaldo is a vital player and is going through a very good run of form and we must take full advantage of that. He was superb. His renewal? That will have to be decided between the club and the player. The main thing is that he brings us these moments of happiness."