Falsely accused of cheating in college
Unfairness and wrong accusations make the blood boil, not just yours. The more it is important that you cool down and stay polite and collected. Now accumulate evidence that supports your case.

The things you write here make a good start.


Bring the "legal cheat sheet" with you and explain that you wouldn't have to cheat in any case with everything that was on there.
document that you took extra courses which covered large parts of the material
offer to give a test (unlikely that they will take it up, but who knows)


The things would demonstrate that you have no incentive, and probably no need to cheat. Of course, you can say "hell" and "sh*t" and "fr*cking" and all these things, but what you need is proof which these pieces of evidence provide. Do you have other indications that support your statement?

What reasons do they have to assume that you copied from him? Is he usually better? Are you usually doing worse? Do you suspect he told them you copied? As Ran asks, did you help the other student? (because that can create a problem, too)