Whether Galois is a spell or a physical Galois' 3 skills are spell damage, but they are all general attack shooters in essence, so Galois can be given a physical six-god outfit, attack speed and crit flow. The Six Gods of Galois: Fast Boots, Last Age, infinity edge, Dawn, Bow of Heaven, Protection of Sages.
If Galois should be in the middle or auxiliary position, you can also try magic clothes: cold boots, pain mask, echo stick, learned anger, frost clothes, sage books.