In a zip-top plastic bag, combine first 3 ingredients (orange juice, lemon juice and salmon).
Seal and marinate in refrigerator 1 hour, turning occasionally.
Remove fish from bag, discard marinade.
In a small bowl, combine next 6 ingredients (sugar, chili powder, lemon zest, cumin, salt and cinnamon).
Place fillets in the mixture and marinade longer or you can baste the fish with the sauce.
Place fillets on grill on medium-high heat and cover with grill lid.
Cook for 10 to 12 minutes or until fish flakes easily when tested with fork.
Serve with lemon slice, if desired.
