Vs Raphael, hmmmm...
well, it goes both back and forth to some degree but, with Vader's crazy step(as Megiddo had mentioned) action it can be quite difficult for him to get to Vader unless he is baiting him in..Raphael has some decent evade/offense abilities of his own but not as much as Vader does..in fact its an uphill battle for Raphael this way....so to even it out more, Raphael HAS to turtle up more so than any Raphael player would like to in this match up, and pick and choose the right spots for taking damage, and THEN use an evasive type attack, forgot the notation, but Raphael steps backwards then lunges in with an attack-throw move(i think it only does it on CH?) is a good example...also Raphael stances can get him into a heap of trouble if played out of its effective range(s)
So yea, learn to "cover up" sort of speaking a bit more than usual(be careful in this attempt or you WILL be flashing red very quickly!!)..so yea..turtle/ pick and choose(and most importantly, take all combo damage as possible, no short cuts, but this goes for most of the cast anyways).. give that a try..
Also BelovedChild, OOF might have not complied with you question as quick as you would have liked him to on the match up due to him having modding multiple soul arena character threads(so he's busy)..and don't take this personal.. but, this website has a TON of information but a lot of the time, nobody wants or is afraid to do the leg work.. what Megiddo, OOF, myself and others have provided should be sufficient in that regard..give it a go and see how it plays out for you(or any Raph player)..unless what Megiddo posted, sums it up for you.. but, if your still having any trouble with it feel free to ask, I'll do what i can to help provide some more match up info and most likely others will do the same.