Rennes have appealed against the two red cards they picked up in Tuesday's tempestuous defeat at Nice.
After seeing Jean-Armel Kana-Biyik and Yassine Jebbour sent off - and his team finishing a game with nine men for the second time this season - Rennes coach Frederic Antonetti said: "The cheats have won."
The Corsican claimed Kana-Biyik should not have been given one of his two yellow cards and pointed the finger at Eric Bautheac, saying the Nice midfielder had produced "a swallow dive" to get Jebbour sent off and win the penalty from which Dario Cvitanich scored the only goal of the game.
Nice responded with a statement in which they hit out at the "defamatory statements" made by Antonetti.
The statement added: "It's not the first time the Rennes coach has been guilty of senseless and inappropriate comments after a game, comments which are very often destined to hide the failings of his own team or management."
Rennes have asked the French Football League's (LFP) Disciplinary Commission to rule on the two decisions by referee Nicolas Rainville to avoid what an official club statement called "a pointless argument" with Nice.
A club statement also praised Antonetti, saying: "The club is delighted to be able to count on a coach whose management, commitment and professionalism are universally recognised.
"Frederic Antonetti simply wanted to react to what all the media saw: that the penalty and the red cards resulted directly from simulation.
"Stade Rennais FC has asked the LFP's Disciplinary Commission to calmly and fairly give its view to, we hope, put an end to any other commentaries."