Drizzle olive oil over tuna steaks and season salt and pepper. Preheat the grill to medium high heat.
Grill tuna 2 minutes per side. Combine all the relish ingredients in a medium bowl. Season with salt and pepper. Place the tuna on a plate and top with the relish. Serve
Recipe by The Gluten Free at https://www.theglutenfree.com/gluten-free-grilled-tuna-with-cucumber-relish/