Marseille, France – Souleymane Diawara's own goal in the late time 2, on Sunday at the Stade Velodrome.
Benoit Cheyrou and Brandao scored inside 34 minutes as Marseille took control, but Bafetimbi Gomis pulled the first back in the 36th and Diawara's error with halftime looming capped a four-goal first half in the Olympic clash.
Lyon used the point to stay in fourth place. Marseille, which is undefeated in its last eight, remained one point out of the European places in fifth.
Sunday's other games, Auxerre at Caen and Lille at Sochaux, were postponed due to severe cold weather.