Benzema scored a stunning second half hattrick to inspire the 13-times Champions League winners to a remarkable 3-1 win in the round of 16 second leg for a 3-2 aggregate victory.
Kylian Mbappe was the main man again for the French giants following another goalscoring display.
Mbappe put the visitors ahead at the break with Real Madrid looking down and out at the break.
But there was a life line for Los Blancos when Benzema equalised in the second half thanks to a Gianluigi Donnarumma howler.
Two more goals in the space of two second half minutes from Benz completed a remarkable turnaround and victory for Madrid as they sealed their place in the last eight.
AON