Goals from Valere Germain and Hatem Ben Arfa fired Nice up to third place in the Ligue 1 table.
PSG ripped Caen to pieces in a 6-0 thrashing at the Parc des Princes, sending the champions 30 points clear in Ligue 1.
Marseille lost more ground in their bid to play in Europe next season as a 1-1 draw at Lorient extended their winless run in Ligue 1 to six games.
Monaco drew 2-2 at home to Reims on Friday night, handing PSG the chance to win the Ligue 1 title on Sunday.
Ajaccio secured an important 1-1 draw against Bordeaux as they battle to stay in Ligue 1.
Paris Saint-Germain fielded a second-string side and were held 0-0 at home by Montpellier in Ligue 1 on Saturday.