If there's one presence you'd want to have on your side in the courtroom, in a dark alley, or at any time you feel threatened, it's the Archangel Michael. Michael's celestial mission is to be humanity's defender. He epitomizes justice. You can request that he come to your assistance.
Post his image, burn fragrant gum resins and use his invocation to call him:
Michael to the left of me
Michael above me
Michael below me
Michael within me
Michael all around me
Michael with your flaming sward of cobalt blue, protect me today!