Defending champions Bayern head into the game at Signal Iduna Park in resurgent form since Jupp Heynckes replaced Carlo Ancelotti as coach on October 9.
Bayern have won all three Bundesliga matches since Heynckes returned for a fourth spell as coach and has turned a five-point deficit to Dortmund into a three-point lead.
"The pressure is not on us now. We will head to Dortmund with a lot of self-confidence," said Robben after Bayern beat Celtic 2-1 in midweek to book their place in the last 16 of the Champions League.
Dortmund have picked up just one point from their last three Bundesliga fixtures, but despite their current dip in form, Robben still thinks Peter Bosz's side are Bayern's main rivals for the title.
"Yes, and it will be like this till the end of the season," he told Bild.
Goalkeeper Sven Ulreich feels Bayern will need to step up on their display against Celtic when they head to Dortmund.
Ulreich said: "This is always a big motivation, but we know that it will be an intensive game. To succeed, we have to improve our performance in comparison to the Celtic game."
After the impressive atmosphere Bayern enjoyed at Celtic Park, Mats Hummels is looking forward to the match at his former club's stadium, saying: "This game will be played in a similar good atmosphere."
In addition to failing to win in the Bundesliga in their last three games, they have also drawn twice with APOEL Nicosia in the Champions League to seriously jeopardise their chances of reaching the knockout phase.
Because of this, coach Bosz is already under pressure, but he believes a positive result against Bayern will help to lift the mood around the Dortmund camp.
Bosz said: "With just one win we could completely turn around the atmosphere at the club. The pressure will help us to perform."