I'm very familiar with Raph, as I've mained him in SC4 and learned him well this time around. You should know he's shit tier because he has no good tools against left step. Often quick step left into guard saves you from literally anything. You can do that occasionally and wait for the whiff, and punish. Also know that Prep (his stance) is usually followed by highs. Duck them. Remember Patrok's WR K,A,CE is a ringout from half some maps. Crush them highs. Raph should be no problem for anyone unless you're getting Prep rushed and don't understand Prep. It's not a good stance once you know it, like some other characters stances with a decent mix-up. You can shut Prep down 100% everytime.