There is an African French dialect called Maghreb French but I believe since they were colonized by France and Belgium they should speak the "usual, common" French with certain variations according to the regions, but it is the same with the languages all over the world.
Of course, if you could find a translator from the region, it should really help although I have read that French works as a neutral communication medium between the different ethnic groups. So, if you can find the right one, perfect, if not, no problem...they will understand.
