Are there a number of insults in French geared at Arab people?

A while ago my husband (whose of Jordanian descent) and I were at a French version of a Wal-mart when this lady bumped into my husband, who was pushing the cart. She said something that was clearly rude, but my French wasn't that good (I did catch "Arab" out of it), and my husband got very angry. He wouldn't tell me what she'd said, but said that it wasn't anything he hadn't heard before as a kid. I suppose there are racial epithets in every language, but is there any particular ones in French that might have been what was used by that lady? I am more curious from a cultural standpoint than anything.