Marseille coach Didier Deschamps has called for everyone at the club to "roll up their sleeves" in a bid to end their current slump, starting with Saturday's Coupe de la Ligue final against Lyon.
OM slumped to their 11th defeat in 12 games last night as Montpellier moved three points clear at the Ligue 1 summit with a 3-1 win at the Stade Velodrome.
Deschamps has started to come under increasing pressure, with Marseille down in ninth place, but the former France captain has urged everyone to pull together and show some grit at the Stade de France at the weekend.
He told the club's website: "We need to have a competitor's mentality because there's a title on the line. It's another game and we're doing it tough, we're in a rut, but we can't afford to let our heads drop.
"We have to roll up our sleeves again and do whatever it takes to fight, even if things are against us. Obviously there are always solutions, but there's no miracle cure either..."
Deschamps admitted belief was low in the camp at present. "We've got a confidence problem, we're fragile," he said. "Wearing this shirt isn't easy. When things are going well, it's fantastic. But when things aren't going your way, it's really not easy.
"The current situation is really tough and I'm not going to point the finger at any individual. If we're in this current situation, it's because we've had a run of negative results. We don't have much time left, but we still have a chance to lift some silverware.
"That's also something about playing at this level: you have to know how to put a defeat behind you and arrive at your next game with enough confidence to give it your best shot."
Morocco international Younes Belhanda scored twice for the visitors in another impressive display by Rene Girard's men. Afterwards, Girard refused to discuss the title race, though, and preferred instead to focus on the battle for UEFA Champions League qualifying spots.
He said: "The result puts us in the box seat to take one of the top three places. This is a match that I viewed as a bonus game but it was important to take something from it. Now we have a three-point lead over PSG, four points with the goal difference, and a ten-point advantage over Lille."