I've never been to a protestant church where the message was that we were "worthy" of the cross. Everything has always been predicated on grace which is necessarily unmerited.
Yeah don't get me wrong I'm not suggesting that any somewhat mainstream protestant church emphasizes that its followers are worthy. I'm just wondering about literally that line being said before they eat the bread and drink the wine.
The theology of the eucharist/communion is definitely different in protestant churches.
I've never been to a protestant church where they believe you receive a sort of saving grace from consuming the host - though there is agreement it is pleasing to God to do it.
In the Catholic church they definitely believe you receive some sort of grace. What "kind" of grace is something I still haven't wrapped my head around.