The defending German champions are currently four points clear at the top of the table after 12 rounds of matches and will take on Jurgen Klopp's side at the Signal Iduna Park after the international break.
"That will certainly be the game of the year," Ribery told Bundesliga.de. "I am already looking forward to it.
"Should we take all three points there, we'd be seven ahead of BVB. It would decide the title race ahead of time.
"We will need to play with a lot of patience, not become panicked and to take our chances. Most of all, we should do everything in our power to avoid losing the ball because Dortmund are incredibly strong on the counter."
Dortmund last won the German league title in 2012.