Its the second time I've gotten stuck on Riku after Twilight Town. The first time was on the GBA version, now its the PS2 version. I need help guys, any certain cards? Moves? Way to dodge attacks advice you give?

Haven't played either, and it's probably clear to other people, but just in case, I'll clarify that the game you are talking about is:

 

Chain of Memories/Re:Chain of Memories

 

I guess you're doing Re:CoM though, right?

Yes, I have both versions of the game, and Im having trouble on Re:Come.

What is the boss you're fighting? I only played Re:Chain of Memories once and I don't remember.

To be clear, are you talking about fighting Riku in Twilight Town as Sora, or playing as Riku in Twilight Town?

Try youtube.

set up a deck so that you can pull off a good sleight repeatedly, for a few cycles through, and put a few elixers and cures in there

I'm play as Sora, this is after Twilight Town where he says Sora's memories are a 'Train Wreck'. And its Re:Com.