Liches are innately immune to level 1-5 spells, and I never managed to Breach one (though I tried). Unless anyone else is damn sure they've breached a Lich, I don't think it's possible.
Pretty annoying too, since the average Lich combines Protection from Magical Weapons with his innate immunity to normal weapons...
Level 6+ area damage spells get them every time, though, except for cold & electrical damage (so no Chain Lightning). | 
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