Results of an X-ray came back negative, sources told ESPN's Chris Haynes on Saturday.
"I know I rolled it good. I went back in the game because I wanted to test it, and it hurt,'' Lillard said. "Went out there for a few possessions and it didn't make sense to even be out there."
Lillard, who is averaging 27.0 points and 6.2 assists per game this season, left the arena in a walking boot.
Information from The Associated Press was used in this report.