Tip: Counter to Darkness?

[GreenAris]

Hi there, would be grateful for any help.

I am currently engaged in an entertaining MP game playing EA Tien Chien against Lanka. But I am struggling against Darkness, specifically the Big Lanka Demons that scare the sun away. We are on turn 70 or so, I have loads of Celestial mages and the ability to cast virtually any spell, but my armies are falling back in disarray from armies of 500 or so demons with darkvision. Help!

Many Thanks