Phillips and Stubbs were both tracking down a shallow popup when the two hit each other, leaving Phillips with a sprained right ankle.
After the game, Phillips said he felt OK, and the Reds' medical staff said it was not too serious, but manager Dusty Baker chose to sit Phillips for the finale of this three-game series.
"He's sore today, as expected," Baker said. "I don't know how much activity he's going to have."
Coupled with Phillips' injury is a trip to the disabled list for Chris Heisey with a strained left oblique. The Reds now have five players on the DL.
"We're kind of walking wounded right now," Baker said. "We just gotta do what we got to do with who we have to do it with."