noun
patron saint
A saint regarded as a special protector or intercessor for a person, place, occupation, or activity.
聖クリストファーは旅人の保護の聖人です。
Saint Christopher is the patron saint of travelers.
Compound of 保護 (ほご, 'protection') + の (possessive particle) + 聖人 (せいじん, 'saint').