unfurnately i did never see a player in my country who could cross up with an medium kick of akuma in the air he do that on me and i didn’t know how to dodge or block it. What is the purpose of crossing up? can it be stopped? how?
Block (or parry) the other way.
End of story.
thanks.
no prob 
Just learn when they’re trying to cross you up, then either parry toward your back, or block by holding toward your front. Ken players’ll do it a lot.