Juve had went into the game 3-0 down from the first leg in Italy, but turned the tie on its head by leading 3-0 going into injury time.
Both teams continued to have chances, but Juve finally drew level on aggregate on the hour mark when Blaise Matuidi pounced to capitalise on goalkeeper Keylor Navas' error to make it 3-0.
Buffon has since seen replays of Medhi Benatia's supposed push on Lucas Vazquez which led to the award of a debatable spot-kick, and he stands by his initial reaction.
'He is a great goalkeeper and I hope this is not his last Champions League appearance, he is one of the best goalkeepers ever'.
"If you do not have personality and courage, you should go to the stands to watch the match with your wife and with a Sprite". It all ended there, but naturally in the heat of the moment one does feel I'm not saying penalised...
"I really don't understand why they were protesting, but football is like that", he said. But it was cruelly taken away amid the ambiguity of Oliver's late decision.
"And a dubious incident at the 93rd minute when we had a clear penalty denied in the first leg, you can not award that at this point".
Buffon appeared to travel the distance from his line to within an inch of Oliver's face in a nanosecond.
Ronaldo knew his side would have to fight until the final whistle against a team as good as Juventus. "I believe that in a few days he will say different things about the referee from what he said (on Wednesday night)".
"It's unbelievable that our captain isn't allowed to speak to the referee - the red card was very harsh".
"The referee blew for a foul that only he saw", Buffon told beIN Sports.
"Even if I was excessive, I said what I thought, that he should not have given that penalty".
"If just once, in one hard and complicated situation, because we were 30 seconds away from extra time - and we're not saying we would've qualified, just had the chance to play extra time - the referee made this decision".
"When people talk about it being a robbery I get angry - it is clear what we are doing annoys a lot of people", Zidane said on Saturday.