From LSWiki

Lightning Resistance is DEAD! R.I.P. It isn't here anymore. Don't bother looking for it in-game.

Class: Resistance Skills
Attribute: Vitality
Pedagogy: Body Alteration
Practitioner Term: Lightning Resistor
Hidden Skill

This skill represents the conditioning of one's body to resist being damaged by the amalgam lightning and essences that partake of
its nature.

Lightning resistance can be increased by exposure to lightning damage, changing more quickly according to one's
somatic adaptability.  It will decay over time, weakening more quickly according to one's somatic adaptability.

See Also: lightning affinity

Trainers