"Occult magic spell" and it's just a Sak Yant...
It has deep roots in Thailand, Cambodia, Laos and Myanmar, it part of Vajrayana Buddhism (which is the most common there)
Sure it's esoteric, but it's not "occult" in the sense that word is understood in the west...
Honestly I have no idea what that tattoo is about, but I can tell a few things it's not...
Esoteric hidden knowledge & systems (aka occult) like this is the kinda stuff I live for, it's so much fun to study!
Angelina Jolie has occult magic spell tattooed on her back