Goals from Jermain Defoe and Jamie Barjonas saw Steven Gerrard's side make it two wins out of two in France.
The Ibrox side had already beaten tournament hosts Lyon 2-0 on Thursday and notched up another success in the Groupama Stadium.
Celtic drew 1-1 with Nice in their opener but went down 2-1 to Lyon on Saturday, with Mohamed Elyounoussi getting their goal.
