[Agema]

The best MR EA Atlantis has on its base troops is 10, and the deep Atlanteans are lower (7-8?). I can quite assure you from experience that a roughly equal gold cost of Ryleh mind blast things with a melee screen versus EA Atlantean troops of any type will tend to end in a big defeat for Atlantis. If you stick high HP thugs with good MR (+MR boosts by spell, bless or item pretty much required) they suck up a lot of the hits and help. If you can recruit enough Pillars, give them a massive S bless and use your god to cast Antimagic, that would get them high enough MR. But good luck getting enough of them.