User blog comment:Longlivemerlin/Merlin 'The Diamond of the Day Dialogue Teasers' UPDATE 3/@comment-4650675-20121221101056

Here are my speculations.

“In robbing him of his magic you have lost yourself an ally” Mordred to Morgana about Eira.

"“We can only be grateful she failed” Gaius to Merlin about EIRA failing to...do her thing.

“Then there is nothing more to be said, except that whatever it is I wish him luck” Arthur to Gaius, about Merlin or Gwaine.

“Let her go, she is not your enemy, I am” Gwaine to a Saxon about Eira.

“Those are not the values that Camelot was built on” Arthur to everyone at the round table, I agree

“A weapon worthy of my proudest warrior” Morgana to Mordred

''“I always thought you were the bravest man I ever met. Guess I was wrong”'' Arthur to Merlin for not going with him.

“I have no reason to go on, the battle is already over, Morgana has won” Merlin to Balinor!

"Face me!" Mordred to Arthur

''"Nothing can survive it's touch." Morgana about her sword

"I hoped never to hear that name again." Either Arthur about Mordred, or Morgana about Emrys.

 “I am a sorcerer, I have magic."  Mordred to Arthur!