PIERCE meat all over with the tip of a sharp knife. Insert the garlic into the cuts in the meat. Place in a bowl or large freezer-weight resealable plastic bag.
MIX dressing, cumin, lime zest and juice until well blended; pour over meat. Cover the bowl or seal the bag and refrigerate overnight. Remove meat from the marinade; discard marinade. Place meat in a foil-lined roasting pan.
BAKE at 350°F for 1-1/2 hours. Pour orange juice over meat. Insert a meat thermometer into the thickest part of the meat. Bake an additional 30 min. or until internal temperature reaches 160°F. Let stand 10 min. before slicing to serve. Serve with juices from the pan.