In kingdom hearts how do you defeat ansem after the hartles shadow thing near the end of the game

Your going to need the dodge roll ability. whenever he tries to attack you you should dodge roll out of the way, then attack his when your done. if he gets you with his forcefield combo attack, just get away from him and keep on freezing when hes not near you. Make sure you have hi-potions and and ethers. keep on doing this and he'll eventually die. you still have to verse him again, though