Was he? He played one great pass to Iniesta but pretty much did nothing other than that. Fantastic is way over the top.
In the home leg he also wasn't great and missed 3 chances that he should have done a lot better. Against PSG away he had a terrible game, probably his worst of the season. Last season the Champions League was simply a disaster for him. The rest of the team didn't help but he still should have done better than he did.
Ronaldo's missed the semifinals once in the past 12 years, he's scored more than anyone in the history of the competition, he has more assists than anyone in the history of the competition, he has more goals in the knockouts, more assists in the knockouts, decided more big matches, he played 5 finals to Messi's 3, won it 4 times while being the competition's top scorer, did it for 2 different clubs,
all of this while playing with a worse team around him for most of it. He was born to play Champions League football.