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Vinicius's goal from the first leg had already put Madrid ahead in the tie, and the Brazilian netted again in the 80th minute to clinch a 3-1 aggregate win for Alvaro Arbeloa's side. 

However, the Estadio Bernabeu was stunned into silence in the 14th minute when Vangelis Pavlidis's cross was slid towards his own goal by Raul Asencio, and though Thibaut Courtois stopped an own goal, Rafa was on hand to tuck home the rebound. 

Benfica's joy was short-lived as Madrid hit back two minutes later through Aurelien Tchouameni, who curled Federico Valverde's inviting cutback into the bottom-right corner. 

Arda Guler thought he had turned the match on its head in the 32nd minute when he finished past Anatoliy Trubin, but the goal was ruled out for an offside against Gonzalo Garcia, whose initial effort was kept out by the visiting goalkeeper.

Benfica forward Richard Rios then forced Courtois into a smart stop at his near post ahead of the break before Rafa clipped the crossbar just after the hour, but Madrid's progression was secured late on with the first shot on target in the second half. 

After being sent through by Valverde, Vinicius raced towards goal and coolly slotted a side-footed strike past Trubin, with Madrid holding on for the nine additional minutes which were added on following a serious-looking injury to Asencio.