“I promise to uphold the Jedi Code. I promise to respect all life and to help those weaker than myself. I vow to use the Force only for good; never in anger and only to defend those who cannot defend themselves. I promise to find new ways to improve myself so that I may be an example to others; to provide guidance to those that seek it, while not seeking to lead or rule them.”
This could also be considered simply a Jedi Oath.