Two goals apiece from Cristiano Ronaldo and Sergio Ramos confined the Bundesliga champions to a 5-0 aggregate reverse, and the Spaniard was far from impressed with his team's display.
He told reporters: "I've have had several hard defeats in my career and this is one of them.
"We conceded goals from set pieces, but we played awful, it's the only reason we lost. There's no other reason, it's just football.
"When you are playing bad, you concede a lot. We came out very energised, it was a back-and-forth game, we could have scored with our chances, but we didn't. Us playing bad is the only one explanation for this defeat."
Meanwhile, Chelsea play Atletico Madrid in the second semi-final this evening.