How do you defeat final xemnas in Kingdom of Hearts 2

Final Xemnas can be very tricky no matter which difficulty you're playing on. On easy, medium, and hard, he starts the battle by taking you all the way up to the top and starts wacking you with his lasers. To dodge them, press /_\ (triangle) which intiates reversal, and keep pressing it until he stops. Then he will start making fake version of himself to trick you into hitting the wrong one, giving him a chance to attack. After you take out a few bars of his hp, he will zap health out of sora, not giving him a chance to attack. This is where Riku comes in. You need to get past the fake xemnas to save sora. Sora's health will be draining at the time. And you can attack the fake xemnas with riku. After you save sora, he will be stunned for a few seconds.Then he starts an attack when lasers start circling you and you have to dodge them. Make sure you time guard. After you get Xemnas to 1 or 2 bars of hp, he will start his strongest attack. Lasers are all around you. To dodge them, you have to press X and triangle, 1 button to guard sora, the other for riku. After the lasers are gone, a cutscene will occur, showing sora and riku beat up xemnas. After that, he will end up with 1 hp, stunned forever, and that's where you finish xemnas.
Hope I helped!