Cloud vs Shulk

If shulk uses Buster, become more agressive because when shulk uses Buster, he deals more damage while simultaneously taking more damage. If he uses smash, keep your distance until it wears off.

Shulk is considered Cloud's worst matchup by several, the range difference between the two becomes obvious when going head-to-toe. Make sure you dip out of the scene if Shulk toggles speed or smash.

Mind your distance with shulk. You’re going to need to zpne him out

Good luck, that's all I can say. Try to keep your distance, and punish for when he whiffs Back Slash