A Ligue 1 game between Marseille and Lille was halted for 38 minutes on Friday after a firecracker was thrown on to the pitch at Stade Velodrome.
Lille led 1-0 when the incident occurred early in the second half, the object exploding close to Marseille players Jordan Amavi and Kevin Strootman.
Referee Amaury Delerue took the players off the field and there was a lengthy delay before they re-emerged to restart the match.
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A chaotic game was preceded by Marseille supporters protesting against the club's ownership, fans displaying a banner that called for coach Rudi Garcia to be sacked.