If you want to cook it inside, this is one of the ones I use:
Orange Marinated Pork Tenderloin
Total time: 1 hr 30 min Prep time: 10 min
1 cup orange juice
1/3 cup soy sauce
2 tbs fresh rosemary (chopped)
3 tsp minced garlic
1 1/2 lbs pork tenderloin
1 Make the orange marinade by whisking together the orange juice, soy sauce, rosemary, and garlic. Pour over pork tenderloin and marinate for at least one hour, preferably overnight.
2 Preheat oven to 350 degrees F. Drain pork, reserving the marinade, and place on a baking sheet. Season with salt and pepper to taste. Cook in the preheated oven until the pork is no longer pink in the center, 45 to 60 minutes. An instant-read thermometer inserted into the center should read 160 degrees F
3 Meanwhile, strain the reserved marinade and bring it to a boil in a small saucepan. Serve this as a sauce for the meat.