We must remember that we beat Real Madrid 3-0 on their own turf and only a insane person would've believed that going in.
"It's painful because no one expected this after the advantage we had but you realise what the reality of the Champions League is like when you do things badly, when you make lots of errors, when you don't adapt to the game", he said.
Ronaldo stepped up to lash past Wojciech Szczesny, leaving Juventus devastated after a remarkable fightback to get to 3-3 after their 3-0 first-leg loss.
Referee Michael Oliver shows a red vehicle to Juventus goalkeeper Gianluigi Buffon on Wednesday.
10 - Cristiano Ronaldo has scored 10 goals against Juventus in the Champions League, the most for a player against a single opponent.
Karim Benzema might not be at his best at the moment but in games of this magnitude the Frenchman has proven he is still a top player in the Champions League.
After Barcelona let a 4-1 first-leg lead slip away to Roma on Tuesday to crash out of the Champions League in humiliating fashion, Real Madrid nearly followed them with an even worse capitulation on Wednesday.More news: ICICI Bank Limited (IBN) Shares Obtained by Keybank National Association OH
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The decision to penalise Medhi Benatia for bundling Lucas Vazquez to the ground has caused significant debate even among the Spanish press, with many praising referee Michael Oliver for the call and others accusing Vazquez of going to ground too easily.
The reaction to the award of the penalty has continued, and Madrid coach Zidane said he found some of the talk embarrassing.
Real Madrid boss Zinedine Zidane also had little sympathy for the Italians.
Then it was Real Madrid's turn to attack, as Gareth Bale came close to answering with what would have been an incredible backheel goal.
He added: "It was a penalty, they've told me it was a penalty".
"My pulse was racing but I stayed calm, I knew it was decisive", said Ronaldo. During the game, Benatia and the rest were constantly kicking us from behind.
Real Madrid will be the semi-finals for the eighth successive time. The ref awarded it and we can't change that, but I think it was a penalty. Just after Mandzukic got his second goal, Raphael Varane rattled the crossbar with a header to which Buffon got his fingertips.
AS admitted the European champions went from "the panic to the semi-finals", while Marca simply believed: "It was a penalty".