A Ligue 1 encounter between the two sides at the Stade Velodrome was called off after some Marseille fans aimed projectiles at the Lyon bus on its way to the Stadium.
Lyon manager Fabio Grosso sustained a facial injury, with images circulating on social media showing the 2006 FIFA World Cup winner lying on a stretcher with his face in a bandage.
Grosso's assistant Raffaele Longo was also injured in the attack.
Marseille have condemned the actions of the perpetrators and sympathised with their opponents.
“Olympique de Marseille deplores the unacceptable incidents which took place this evening around the Stade Velodrome, against the professional team bus as well as Olympique Lyonnais supporter buses,” the OM statement read.
“The club wishes a speedy recovery to Lyon coach Fabio Grosso and strongly condemns this violent behaviour which has no place in the world of football and in society.
“Due to a handful of mindless people, the game planned for this evening was spoiled and deprived 65,000 supporters of attending a football match.
“The club complies with the decision taken by the LFP and remains at its disposal so that the match which was scheduled for this Sunday, October 29, takes place as quickly as possible and under the best possible conditions at the Stade Velodrome.”
