These answers are somewhat related to your question and might be interesting while you wait for a direct answer:

What was religious practice in Gaul like between Caesar's conquest and the enforcement of Christianity as the state religion under Constantine? by /u/bigfridge224

Let's say I'm a farmer in Gaul during Caesars's campaigns. I'm pretty far from the action but my farm is on lands annexed by Rome upon Caesar's victory. Do I know? Do I care? Does anything major change for me? Will someone come and tell me? and How successful did the Romans, 'Romanise' the peoples they conquered? ie Gauls by /u/Tiako

What happened to the Gallo-Roman aristocracy in north and south "France" after/during the fall of the Western Roman Empire? by /u/thejukeboxhero