Antaran Victory Without Attacks
With this mod, you can still achieve the Antaran victory in the usual way, but the Antarans will not launch their regular attacks. Specifically, this sets the attacks to begin between turn 9000 and 9999, so this should effectively disable their attacks unless you play an absurdly long game.
To get Antaran attacks without the victory condition see this mod.
This mod should be compatible with most other mods, but you should put this mod last (at the bottom) of your mods list in game for best results.