[@Digizel] LOL at "BEDAZZLED" :D I'm just picturing Saur covered in fake plastic diamonds. Just for reference: https://2e.aonprd.com/Conditions.aspx?ID=65

Yes, P2e is huge on the attack bonuses for creatures. In P2e, AC for a tank is not about "not getting hit." It's about "not getting crit." Those hits would definitely have crit some of your other party members. You should be able to rely on your party for healing mid-fight, even if you're taking all the hits.

And yes, it's totally fine for you to post Saur's reaction to these events, even if it's not really a "Reaction" action.