Ronaldo scored twice at the Allianz Arena to help Los Merengues come back from a goal down to beat Die Roten 2-1 in the first leg of their Champions League tie.
While Ronaldo and Benzema, along with goalkeeper Keylor Navas, will rest when Madrid visits Sporting Gijon, coach Zinedine Zidane said on Friday that an unidentified leg injury will keep Bale from playing. "That is how ambitious he is".
Javi Martinez was shown a red card on the hour mark for two fouls on Ronaldo in three minutes, and the four-time world player of the year then hit the victor, tapping in Marco Asensio's low cross to give Real the advantage ahead of the return leg at the Bernabeu next Tuesday. The team also had a goal from Sergio Ramos disallowed for offside not long before the final whistle.
Zidane said he wasn't sure if Bale would be ready to play the return leg of the quarterfinal against Bayern next week.
That being said, the tension told when Marco Asensio, on as a substitute for Gareth Bale, clipped a delightful ball into Ronaldo's path on the 77th minute, and the forward got to the ball first to clip in the victor.
Ronaldo scored two minutes after the break with one touch to Carvajal's cross.
Ronaldo had faced criticism after struggling to find his best form in recent weeks, but the 32-year-old's two goals took him onto 100 in European club competition, and he has refused to recognise his critics.
Arturo Vidal headed Bayern into the lead, but then skied a penalty attempt on the stroke of half-time.
A popular football fan page on Facebook on Friday shared a rather intriguing news clip, reporting that Ronaldo has scored his 100th goal in the world;s premier club tournament, the UEFA Champions League, helping his club Barcelona in the process.
It proved a costly miss as Ronaldo swept in an equaliser two minutes into the second half before Bayern's defensive midfielder Javi Martinez picked up two quick cautions to leave the home side a player down for the final half-hour. "I'm in good condition", he said.
"But after they missed the penalty, I was convinced the team would be encouraged and the second half was going to be ours. We have enough self belief, we have the quality and passion to win in Madrid".
Ancelotti says the Germans still have a fighting chance in the return leg in Madrid on Tuesday.
Seeking their first league title since 2012, Madrid have a game in hand and a three-point lead over two-time defending champion Barcelona, who host sixth-place Real Sociedad later tomorrow.