The intent was definitely for that part to only activate if Rapha blocks. I'm not certain that's what the rules say.
However, "if blocking" is a one time check when you play the card, like Foreign Wives draw check. So unless you manage to put Rapha in territory while you are already blocking, you can't search. And I'm not sure you can search in that scenario, just that it's the only one where you might be able to.
The usage of "if blocking" on Warning Against Rebellion and "if rescuing" on Eternal Inheritance/Lamb's Righteousness does tend to point towards the phrases applying to the player, since Enhancements don't do either.