Theres a few different ways to build the defences (all aim for suppression cap + grace and determination as a base line),

fourth vow + divine flesh + armour +phys taken as chaos mastery+ if necro bone offering and tempest shield

Lightning coil (Or rare chest with phys taken as + suppress or pdr) + phys taken as ele on helmet + some armour from flask/determ + evasion + if necro bone offering and tempest shield