1.Preheat a grill pan or barbecue and preheat oven to 220°C (200°C fan).
2.Combine rosemary and oregano and sprinkle on a surface. Roll beef firmly in herb mixture.
3.Chargrill beef for 5 minutes each side. Place on a tray and transfer to preheated oven for 5 minutes. Remove from oven and rest 20 minutes, loosely covered with foil. To serve, slice thinly and arrange on a platter.
4.In a bowl, place zucchini, tomatoes and chilli. Season with salt and pepper and toss gently to combine.
5.Scatter beef with zucchini, tomatoes and chilli and top with basil leaves. Drizzle generously with oil and lemon juice. Serve with crusty bread.