Los Blancos are trailing 2-1 from the first leg at the Allianz Arena but entertain the Bavarians on their home turf tonight.
The Portuguese superstar has promised the Bernabeu faithful that he and his teammates will deliver them to the final in Munich.
"The team's moment has arrived," said Ronaldo. "It's a big game and we're going to win it."
Chelsea await the winner of tonight's match following their 3-2 aggregate victory over Barcelona.