SQUEEZE juice from 1 citrus fruit; mix with sauce. Pour half of the sauce mixture into large resealable plastic bag. Add meat/fish; seal bag. Marinate in refrigerator at least 15 min. Refrigerate reserved sauce mixture.

MEANWHILE, preheat barbecue to medium heat. Cut each of the 4 remaining unpeeled fruit into 4 slices. Remove meat/fish from marinade; discard marinade. Place 8 of the fruit slices on barbecue; top with meat/fish. Brush with reserved sauce mixture.

GRILL meat/fish in covered barbecue 5 min.; turn meat/fish over on top of fruit. Add remaining 8 fruit slices to barbecue. Continue cooking until meat/fish is cooked through, turning occasionally and brushing with reserved sauce mixture. (see Grilling Times below). Remove meat/fish and fruit from barbecue. Discard fruit slices under meat/fish. Serve remaining fruit slices with meat/fish.