Ronaldo was hooked with 20 minutes to go during the 2-2 draw against Las Palmas.
"Everything's as normal," said Zidane.
"He's not the only one who gets angry. Whenever they are brought off, all of the players may well be angry. Our focus is on tomorrow's game. I took the decision in the interest of the player and that's that. The fact that all of this is receiving more attention than the game itself is just the way things are. We have to deal with that and we're relaxed about it. I'm not daft and he's intelligent. We're both here for the same thing and not to talk about other stuff."