In my opinion, the Kodiak T-F module, unlocked at First Sergeant, has the best overall protection against turrets, at least at my rank. Railgun is the most used turret in the long run, thunder is pretty dangerous to the light hulls I use, and ricochet protection allows me to maybe (at higher ranks of course, doesn't have enough prot. at my rank) even the odds against enemy ricochets with heavier hulls when attacking.