There isn't actual text for Pali. Pali was a spoken language and has been written down in many languages including Devanagari, Sinhala, Thai, and Burmese.
You'd have to get someone to translate it into Pali (spoken), and then into a written language.
I am actually getting a Pali phrase tattooed on myself using Thai lettering, interestingly enough.
Also, as a sidenote, the first noble truth is not, "Life is suffering." That is a common misconception. It is (in one of its many translations) "There EXISTS suffering." If life was suffering, how could there be liberation?
Best of luck finding translations. Make sure to do lots of research before putting it on your body. I've been studying the phrase I'm getting tattooed on me for over 6 months, and have had monks, mantra-writers, and several Thai people check it out for me.
Tattoos are a great reminder to practice the path.
EDIT: I did not see the other responses before this one, so please excuses any redundancies.