七龙佛别名：开运佛丨นาคปรก丨。“七龙佛”又称为开运佛，是崇迪佛牌之中的一种。佛牌正面法相为佛祖（未为成佛陀前）禅修形象为主，身后一条神龙为其护法而组成。在泰国“七龙佛”是周六出生人的保护佛，特别适合周六当日出生的朋友（注意：泰国计算一天是由晚六点开始算的）佩戴。当然即使不是周六出生的朋友也可以得到七龙佛的护佑。由泰国师傅，督造加持的“七龙佛”佛牌最主要的功效是：挡灾避险、邪魔不得近佩戴者其身，其次也有一定开运、促事业之功效。由于七龙佛也周六的保护佛，因此特别推荐当日出生的朋友佩戴。
"Phra Nak Prok", meaning "Buddha Protected by Naga", is the Buddha image for people born on Saturday. "Naga" is the name for a deity, taking the form of a very great snake. Among the notable nagas of Buddhist tradition is Mucalinda, protector of the Buddha. Shortly after his enlightenment, Buddha is meditating in a forest when a great storm arises, but graciously Naga King Mucalinda gives shelter to the Buddha from the storm by covering the Buddha's head with his 7 snake heads.
Phra Nak Prok is renowned for effects of the prosperity of careers, safety, protection against disasters, and turning misfortune into fortune, a good choice for the military or the police.
Also, people born on Saturday are recommended to wear Phra Nak Prok amulets, the Saturday Buddha.