The Los Blancos left-back collapsed to the floor, clutching his face, after he headbutted Max Arnold during the 2-0 reverse in Germany.
Roy Keane and Glenn Hoddle slammed Real Madrid star Marcelo over his play-acting during the defeat in Wolfsburg .
With Los Blancos trailing 2-0 and just 20 minutes left on the clock, the Brazilian full-back tried his luck with the referee as he headbutted Maximilian Arnold in the midriff before clutching his face and going down in an attempt to get the player in trouble.
Incredibly, Arnold came out of the incident with a yellow card to his name.
The incident evoked memories of countryman Rivaldo’s theatrics in Brazil’s clash with Turkey in the 2002 World Cup.
And ITV pundits Keane and Hoddle wasted no time sticking the boot in to the Brazilian.
Hoddle said: “He goes down like he has been shot. It’s embarrassing. This is disgraceful.”
Keane added: “It’s shocking. I do not know how his legs have given way.”
First-half goals from Ricardo Rodriguez, from the spot, and Arnold gave the hosts a well-deserved victory and blew this tie wide open.
Madrid were out of sorts after their cla’sico exertions in Barcelona on Saturday night.
And after some early chances they offered little as the energetic hosts ripped them apart again and again on the counter.
Rodriguez’s penalty, resulting from a clumsy Casemiro chance, and Arnold’s deft finish were enough for Wolfsburg, who could have had a third if Andre Schurrle hadn’t blazed over a terrific second-half chance.
Zidane has backed his side to turn overturn the deficit.
He said: “The only thing we can do is be calm. I am not going to go crazy, the players neither.
“We are hurting, as to lose always hurts. But now we know we have chance to change this.
“Being Real Madrid we know we can turn this around at the Bernabeu with our fans.”
And the Frenchman suggested his side’s lacklustre performance could have been down to their over-exertions in Barcelona on Saturday night where they won el clasico.
“Physically we have suffered, above all in the first half. We lacked, above all, mobility in all the lines, above all at the start.”