I'm doing literal translations here then using guesses in context to figure out different dialogue. Starting with this post: http://www.gamesas.com/topic/1321268-heard-something-strange-in-helgen-today/page__view__findpost__p__19862867 . These are the lines of dialogue (non-Shout) that Alduin says at the very beginning of the game. Feel free to assist, there's a few rather large gaps! There used to be a great post on this, but I can't find it. The more phrases we can translate based on context, the more words we learn!

Sources: http://www.uesp.net/wiki/Lore:Dragon_Language, http://elderscrolls.wikia.com/wiki/Dragon_Words:_A, http://elderscrolls.wikia.com/wiki/Dragon_Words:_AB, and http://elderscrolls.wikia.com/wiki/Dragon_language


Original: "Daar Lein los dii."
Literal: "This world is [dii]."
My guess: "This world is mine." (based off later translation)

Original: Hin sil fen nahkip bahloki.
Literal: Your soul will [nahkip] hunger.
My rough guess: Your soul will feed my hunger.

Original: Zu'u lost daal.
Literal: [Zu'u] have return.
My guess: "I have returned." (see below)

Original: Zu'u Alduin, zok sahrot do naan ko Lein.
Literal [Zu'u] Alduin, most mighty of any in World.
My guess: I am Alduin, the most powerful being in the world.

Original: Nust wo ni qiilan fen kos duaan.
Literal: They who not [qiilan] will be [duaan].
My rough guess #1: Those who do not submit will be devoured.
Note: From "du", and Alduin's title, the "Devourer of Worlds"

Original: Di kiirre fen alok.
Literal: [Di] child will arise.
My guess: "My children will arise."
Note: Based off the guess he's talking about dragons returning to Skyrim.

Original: Fen du hin sille ko Sovngarde!
Literal: Will devour your soul in Sovngarde!
My guess: I will devour you and send your soul to Sovngarde!
digited's guess: "I'll kill you and then devour your soul in Sovngarde!".

Original: Kel drey ni viik.
Literal: Elder Scroll did not defeat.
My guess: The Elder Scroll did not defeat me.
Note:
Original: Pahlok joorre! Hin kah fen kos bonaar.
Literal: All+sky mortals! Your pride will be humble.
My rough guess: Mortals! You will be humbled.
Note: "bahlok" or "wrath+sky" is "hunger", which refers to Alduin. "Pahlok" may refer to the Aedra, creators of the mortal world. Wild guess.


Edit: Edited some translations based on digited's comments.

Major plot spoiler below:

Ah thanks, I've edited the main post.

If people are wondering about the spoiler tags, some things in this thread will be plain spoilers no tags, while other things are so spoilerish (like learned at the end of MQ) that I put them in tags.

This thread also needs dialogs between resurrected dragons and Alduin.

Give me the dialog and I'll start us off.

I can confirm that "Zu'u" is "I [am/have]". When Alduin is defeated, his last line is "Zu'u unslaad, zu'u nis oblaan", which means "I am immortal, I cannot die."

Also, you don't need spoiler tags on the spoiler forum.