I can only understand some of them. In the beginning of ep 4 she says something like "Give me sight so I may see..." I'm not sure. I found a transcript for Excalibur, so I can figure out a bit more. At the beginning she says "Hear me wan knight, awake. Be strong and break thy...something...arise and punish Uther Pendragon!" When she threw a fireball at Merlin in ep 13, she said "Forbearne!" (I dunno if I spelled that right,) which Merlin has also used, and it means basically "catch fire."