Hmmm I will give a long shot and say that you should equip all items that give resist and a holy armour, never get over 90% resist, if you got a slot left, try to get 100% some statuses, since you can equip 4 slots. Most equipments people use are : Captain Hat (10% Resist Water), Valkyrie Shield( 40% Resist), Tidal Shoes(10% resist water) and Fire Lords Ring (10% Resist Fire, able to equip 2).
It's impossible to lower all damage to 0, but it is possible to leave it at 10%~20%.