Sever Conduit

Trigger Your eidolon takes damage that would bring you to 0 Hit Points and comes from an effect other than a death effect

Effect You quickly extinguish the link with your eidolon, causing your bonded ally to wink out of existence before you can be laid low. Your eidolon unmanifests, and you can't Manifest your Eidolon for 1 minute. In exchange, you don't take the triggering damage, though your eidolon still suffers any other adverse effects that accompanied the damage.