I don't see how Death the Kid could attack me considering I make a very anal point of being symmetrical... But I wouldn't do anything. I'd stand there and let him attack me. If he takes my soul I could die happily just knowing he exists.
If Marisa Kirisame from Touhou attacked me. I would most likely be dead unless I can escape a Master Spark. I could dodge it though. Another thing I'd do would be to lie to her saying there's something extremely valuable to steal and most likely she'd believe me because she is incredibly greedy.
If she "attacked me" in another way I certain wouldn't mind it. ;)
BTW THIS is a Master Spark (Rather one version of it.)