The capital club's head coach says he was content with how his side performed in the victory over OM, singling out Javier Pastore in particular for praise
Summer signing Thiago Silva opened the scoring for Les Parisiens just before the hour mark, with Jeremy Menez doubling his side's lead five minutes into the second half.
But it was the players who had not previously had the opportunity to impress which caught the Italian's eye as he rotated the squad for the Coupe de la Ligue clash.
"The players who have not played much had a good match," the 53-year-old told reporters.
"[They played] with a good attitude and were in good condition. There was a lot of aggression. I'm happy."
His team's job was made easier on the night, however, after Marseille's Rod Fanni was harshly dismissed for a foul inside the box on Guillaume Hoarau who was in in place of talismanic striker Zlatan Ibrahimovic.
"Everyone knows the importance of this game. Marseille showed a lot of intensity, even if it was harder after the red card," Ancelotti added.
"Ibra was not sure to be 100 per cent. He had played 14 consecutive matches. He had to recharge.
"[Pastore] was better. He made a fantastic pass to [Jeremy] Menez. He is improving. There is more confidence."
The former Chelsea and Milan coach also alluded to PSG's next match, a Ligue 1 clash at home to Saint-Etienne.
"It will not be easy," he said. "They are a very good team. They won easily last night.
"This is a dynamic team with attacking players. [It is] an interesting game."