Preheat the grill to medium heat
Cut a large piece of heavy-duty foil
Lightly oil the foil or use nonstick spray
Place the salmon skin-side down on the foil
Season with salt, pepper, and desired herbs or spices
Add lemon slices, garlic, butter, or olive oil if desired
Fold the foil around the salmon and seal the edges tightly
Place the foil packet on the grill
Cook with the lid closed for 10 to 15 minutes, depending on thickness
Check for doneness; salmon should flake easily with a fork
Carefully open the foil packet and remove from the grill
Serve immediately