Use a small-sized bowl, add Olive Oil, Horseradish, Garlic Powder, Salt, and Pepper (as per your taste).
Now add Soy Sauce and continuously whisk it until all the ingredients are combined well.
Use a brush to season the sauce on each side of Salmon.
Heat the grill at medium to high flame, also grease it.
Cook the Salmon for about 5 minutes on each side.
Serve the Salmon on the plate and garnish.