The victory is the fourth in a row for Marseille, who raised their tally to 36 points in third place, 4 points behind Lens II and 3 points ahead of Monaco.
Marseille opened the scoring early in the second half through Portugal’s Nuno Tavares (47), before adding a friendly-fire double from Maxim Esteve (61), and the goal to narrow the difference with Montpellier came in delay with Tigi Savanier (90 + 1 from a penalty kick).
The referee sent off Tavares three minutes before the end of the match.
Lille, champions of the penultimate season, failed to get close to the top teams by drawing 1-1 at home with Reims.
Lille remained seventh with 30 points, 3 points behind fourth-placed Monaco.
Canada’s Jonathan David opened the scoring of the night after 32 minutes, taking his tally to 10 goals this season and third in the scoring charts, but Swede Jens Kagost equalized for Reims 11 minutes before the end of the game.
On the other hand, the Reims XI have maintained their unbeaten record in the last nine games since taking charge of Will Steele.
Later, Ren meets Nice at the end of the stage.