[Shovah32]

You could always try an awake, F9 dragon with dom10, order 3, sloth2, heat 3, misfortune 2, drain 2.

The dragons awe+breath should be able to handle indy troops easily. Your sacreds will be deadly, even on Lankas sacreds(although an E9 bless would still make Lankas sacreds tough), and your sacreds+pretender will be extremely effective if Lanka summons a few of those lovely, 50% fire weakness nationals.

If you manage to research up to either Conjuration 5 or Evocation 5 you will be in a great position. F9 Gandharvas are deadly and still tough if you take conjuration, where-as your national mages casting gifts from heaven, falling frost and(against chaff mainly) earthquake/bladewind can do alot of damage. Your F9 Dragon casting falling fires should also decimate just about anything Lanka has.
You could also head for alteration 4 instead, for destruction(destruction+F9 Yavanas=dead enemies).