[Aleph]

If you need your god to be effective in the current game, then stop playing - you've lost. If you can go on without him, don't bother calling him back anymore. He's done, either way. If it's really driving you insane, try playing an imprisoned pretender with a powerful bless - you are 100% safe from horrors while imprisoned.

There are ways to avoid horrors (Returning, for example, should work unless you're hit at home), but the best advice is that which you already got - don't get marked in the first place. Horrors are supposed to be the nastiest things in the game. Insisting they need to be weakened because a spellcasting pretender is getting repeatedly obliterated by them misses the point - they are a counter to the nastiest things in the game (SCs, and especially immortal SCs), and if they were weakened so a moderate pretender could deal with them they couldn't fulfill their main role.