"It was a tough one, and we knew it was going to be a tough one going in," Lillard told reporters.
"They're a good team; they only had one loss. But we're a good team, too, and we wanted to prove that."
Despite recording a win against one of the teams expected to challenge for the NBA title, Portland coach Terry Stotts does not believe that his side have made a statement to the other top teams.
"We played the most complete game from beginning to end: execution, effort, mental focus. All of those things," Stotts claimed. "But I don't believe you play statement games in December."
Portland have lost just three of their 18 games this season.