In Catholicism, St. Sebastian is the Patron Saint of Archers, and of a holy death. The holy death part seems to have linked him in some way to the veneration of Santa Muerte ( who is not an "official" catholic saint ). Sebastian is also a Patron Saint of soldiers ( he was in the Roman army), as well as a Patron Saint of Athletes. I know a popular Confirmation gift for kids in athletics is a St. Sebastian medal. He is also well known for his healing abilities and sought for protection against plague. Since the middle ages, he has been depicted as a handsome, young, ... almost naked man shot with arrows i.e. "a hottie", popular with both females and gay men.
You can google St. Sebastian prayers and novenas. I am sure some of the Catholic sites have prayers for each area for which he is a Patron. As far as hoodoo tradition goes, some of the other folks on here will have to fill in the details. Best of luck.