Casillas denied reports of a showdown meeting between Ronaldo and Madrid boss Jose Mourinho this week.
He said: "I saw Ronaldo (on Wednesday) and he was happy. We were discussing the results of the international teams.
"I arrived at training at 4.15pm and there was no meeting, there was nothing out of the ordinary. Cristiano was normal. We have to be focused on the Sevilla match, we cannot drop more points, we have to win."