Lyon moved top of Ligue 1 with a 3-0 victory over Reims at the Stade Gerland.
The result lifted
Yoann Gouffran scored the only goal eight minutes into the second half to see off a Marseille side which finished with 10 men after the dismissal of
Cvitanich's 60th-minute effort proved the difference between the two and earned Nice a deserved win, although Toulouse will feel slightly unfortunate after hitting the woodwork twice, the second occasion coming three minutes from the end.
The result lifts improving Nice into 11th place while Toulouse, which was in the top two not so long ago, is now down to ninth after slumping to a third successive league defeat and fourth on the trot in all competitions.
Former Montpellier boss Rolland Courbis is expected to return to the Ligue 1 club as its new coach on Monday.