Very high protein, low fat diet?

I just want to know if this works. I am eating a hell of a lot of protein. I drink casein protein shakes morning, lunch and before i got bed. I am eating twice a day at the most, usually a high carb and protein meal. I am weightlifting consistently and I am doing cardio as well. Will I lose a lot of fat while keeping muscle? I want to lose it quick, and I am working out very hard.