noun, noun or participle which takes 'suru'
praying to a god for help; entreaty to a deity
Often implies relying on divine intervention when one's own efforts are insufficient, sometimes with a nuance of leaving things to fate.
試験に合格できるように神頼みした。
I prayed to the gods to pass the exam.
もう神頼みしかない状況だ。
It's a situation where we can only rely on divine help.