Two goals from Thomas Muller, and further efforts from Mario Gomez and Robben himself gave the Bavarians the largest margin of victory in Champions League semi-final history, and the 29-year-old was stunned by the incredbile nature of the result.
“This was pure enjoyment. Fantastic. It's almost inconceivable how well we played. I don’t even think we ever played this well before," he told ITV after the match.
“No, I really can’t [believe the result], but I think we can be very proud, because we gave them good competition in a game everybody said was 50-50.
“[Barcelona] have dominated Europe over the last five years, and to beat them like this in such a terrific way, I think we have to be proud. But on the other hand, let's be humble about it and enjoy this evening, because there's still a game to play and we have to be ready [for the second leg]."
Robben’s involvement did not come without controversy, however, as he appeared to benefit from Muller’s unpunished block on Jordi Alba in the build-up to his goal – but the winger refused to be drawn on the incident.
"I don't know [if we benefited from the referee’s decisions], I don't want to speak about this. I want to speak about the way we played tonight, because I think that needs to have the upper hand.
“We fought for every metre, and they only had one chance. In the end we really deserved the win."