Hello Tookie
I believe the translation you're looking for is:
"ἡ του ἀνθÏοπου ψυχη ἀθανατος (á¼ÏƒÏ„ιν)"
You could omit the "á¼ÏƒÏ„ιν" to make it more powerful, and since it's a tattoo, to save some space.
My keyboard can't put spiriti on the starting vowels of the words, so I copied them from
this Wiki page, which explains why they look a bit bigger.