Buffon was sent off in the dying minutes of Wednesday’s Champions League quarter-final clash after Real Madrid had been awarded a late penalty.
Buffon received his marching orders over his aggressive protests to English referee Michael Oliver.
Ronaldo then stepped up and fired past substitute Wojciech Szczesny.
The match was in the balance heading into extra time with Juve having cancelled the three-goal Madrid lead with from the first leg, before the controversial penalty call
“It was a tenth of a penalty,”
Buffon told Mediaset Premium. “I know the referee saw what he saw, but it was certainly a dubious incident.
Not clear-cut. And a dubious incident at the 93rd minute when we had a clear penalty denied in the first leg, you cannot award that at this point.
“The team gave its all, but a human being cannot destroy dreams like that at the end of an extraordinary comeback on a dubious situation.
“Clearly you cannot have a heart in your chest, but a garbage bin. On top of that, if you don’t have the character to walk on a pitch like this in a stadium like this, you can sit in the stands with your wife, your kids, drinking your Sprite and eating crisps.
“You cannot ruin the dreams of a team. I could’ve told the referee anything at that moment, but he had to understand the degree of the disaster he was creating.
“If you can’t handle the pressure and have the courage to make a decision, then you should just sit in the stands and eat your crisps.”
Buffon would later tell Spanish radio: “You have to be a murderer to make the last two decisions the referee made.
“We started out knowing full well we had 0.0000005 per cent chance of doing it. But I am so truly proud to be part of a team that would play like this, work so hard and give everything.
I am proud to be with this group of men.
“Naturally, there is regret and, well, anger.”