Actually it's
Morte Alla Francia Italia Anela


Meaning "Death to the French is Italy's cry" (Or literally: "Death to France Italy is crying", well something like that..)

This however is (probably) not the meaning or the origin of the word Mafia. Some sources say that a sicilian woman had a daughter who was raped by the french soldiers and the woman screamed: "Ma figlia! Ma figlia!" (My daughter! My daughter!), and that this incident caused the "revolution" against the french opressors, when the "families" were formed.

Another explanation of the word is that the early regimes were called "mafie" in Sicily. For some reason the called the groups of people "mafie" (allthough I have no idea what that would mean..)
"Mafie" would be the pluralis of "Mafia".