Put the steak in a large bowl with the lime juice, soy sauce and garlic. Turn to coat in the marinade, then set aside for 10 minutes.
Heat a chargrill pan or large non-stick frying pan over high heat. Cook the steak for 1-2 minutes on each side for rare, or until done to your liking. Set aside to cool.
Steam the broccoli in a steamer set over a saucepan of boiling water for 5-6 minutes, until just tender. Refresh immediately in cold water, then drain and allow to cool. Place in a large bowl with the cucumber and herbs.
Thinly slice the steak and add it to the salad.
Combine the lime juice, soy sauce, chilies and sugar in a small bowl.
Pour the dressing over the steak and broccoli, gently tossing to combine. Divide the salad among four plate and serve.
Tip: When broccoli is overcooked it loses both flavour and nutritional value, so steaming it is the best method to retain its excellent health benefits. broccoli contains high levels of vitamins A, C and K as well as fibre and folate.
Per serving: 191 calories, 29 g protein, 6 g fat (3 g saturated fat), 5 g carbohydrate (3 g sugars), 2 g fibre, 618 mg sodium