The Champions League quarter-final looked to be heading for extra-time after Juventus scored three times at the Bernabeu to level the aggregate score at 3-3.
And, as both sides pushed for the all-important victor - with extra-time looming, Benatia's contact on Vazquez inside the box prompted Oliver to point to the spot, with captain Gianluigi Buffon sent off and Ronaldo coolly obliging with the penalty. However, the holders of the European trophy were awarded a late penalty deep into stoppage time after Mehdi Benatia was adjudged of a foul on Lucas Vazquez by referee Michael Oliver.
The 26-year-old attacker went on to add that it was normal for the opposing players to question the referee's decision because it was so late in the game and they were on the verge of going out but Madrid have to learn from this game, "It's normal [that Juventus players protested], it was the final minute".
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"You can see the ball bounce off my foot and change direction".
Benatia then fumed about Oliver's decision to send off Buffon. The minutes until the penalty kick are everlasting, but we have to be very happy because we are onto the semifinals.
After an inspired Cristiano Ronaldo performance helped Madrid to a 3-0 first leg win, the Bianconeri bounced back in remarkable fashion after a Mario Mandzukic brace and Blaise Matuidi effort on the hour.
Madrid will now join Roma, Liverpool and Bayern Munich in the semi-finals, as Juve rue this costly and contentious decision.