Referee Michael Oliver decided to award a penalty to Lucas Vazquez for Benatia's supposedly clumsy challenge, sparking a furious public debate on whether the penalty was justified.
The referee's decision prompted a genuinely split reaction, not only on the pitch, but elsewhere as the controversy has spread quickly across and beyond the footballing world.
Emotions were already heightened at the Bernabeu stadium, with Juventus headed for a historic win, before the debatable decision was made in the 93rd minute which Ronaldo converted to hand Real the win.
It did not take long for people to voice their reactions to the penalty, sparking passionate outbursts on social media from both sides. There is fierce competition between those who saw a clear penalty, and those who are furious with the decision.
Regardless, the controversial decision that determined the outcome of the Madrid-Juventus quarter-final clash will be remembered for a long time to come.