Jokic made a career-high seven 3-pointers but missed a free throw with 20 seconds left that would have tied the game.
Underdog Dubois went after his celebrated rival from the start and was rewarded as his big shots wobbled the 2012 London Olympic champion time and again.
Eyeing a seventh European crown, standing in Liverpool’s way are seven-time winners AC Milan.
Nikola Jokic had 37 points, 18 rebounds and 15 assists for his fourth straight triple-double, while Kyrie Irving had a season-high 43 points for Dallas in the heated battle.
Reigning champion, Ding Liren sees the in-form D Gukesh as the favourite to win the 45th Chess Olympiad.