The Dutchman was quick to dismiss concerns over his side's form after they went two consecutive games without victory - but admits they can improve in the Champions League
Bayern were held 3-3 at home against Hoffenheim on Sunday, ending a run of 12 consecutive Bundesliga wins in 2014, before Bastian Schweinsteiger secured a 1-1 stalemate at Manchester United in Tuesday's Champions League quarter-final first leg.
"It's a giant crisis, yes," joked Robben, speaking to TZ. "We should have a serious meeting tomorrow."
While the 30-year-old went on to state his side were content with their draw at Old Trafford, he believes they can play far better in front of their own fans and is confident United will not approach the game with an attacking mindset.
He added: "It's okay. First of all, because they have scored the first goal. If we went in the lead, my feeling would be different now. So we are pleased simply about the away goal that we have achieved.
"We can play a bit better and faster, but on the other hand, you must also first find the gap in such a compact defence. Sometimes we came through the flanks, I had a couple of shots but no big chances were taken.
"They will not go on full attack, I think. But that does not matter. We need to get a top performance with our fans behind us, play our game and try to score goals in Munich. But we must also be on guard, that's for sure."
Bayern travel to Augsburg on Saturday having already sealed the domestic title, but Robben stressed he would not enjoy being rested ahead of the visit of David Moyes' men next week.
"It's down to the coach, it's his decision," he said.
"I always like to play, of course. But for me it's also about Wednesday. On Saturday there is nothing more to be gained, [but] for the rhythm it could be important.
"The decisive aspect is Wednesday, since we are required to come and pick up our performance. We are a team that is there when it counts. We have to show that again now."