Feta Salad with Grilled Lamb

• 400 g tin brown lentils
• .5 cup mint leaves
• 200 g cherry tomatoes
• 1 cup green peas, frozen
• 1 Lebanese cucumber, shaved
• 50 g Danish feta
• 200 g lamb back strap
• 2 tbsp extra virgin olive oil
• 1 tbsp lemon juice