when i think of the origin of dios the story plot in the movie cause its like the tieing of loose knots to me from the anime...

where dios was created from akio by anshi's powers untill it faided away and akio became back to himself that gio loves oh so very much... ye shall never convert me ya hear gio!

i ono that was what i thought

Rampala wrote:

Anthy:  There's something strange about Tenjou-san.
Anthy:  She could even die...
Anthy:  Why is she fighting this duel?
Anthy:  It's over, Tenjou-san...
Anthy:  But I've seen this before. I know...
Anthy:  I know I have...
Anthy:  This is... this...
Anthy:  I know, just as it was back then...

Gaaah, not that quote again! There are so many ways to interprete it and...and it never ends!

(Some of the following is a bit off-topic)
It's obvious that this is the part where Utena reminds her of Dios as he used to be. I think "back then" simply refers to the period when Dios was saving princesses and before Anthy became the Witch. Could it be that Anthy herself had forgotten about "that time"? And Utena's actions brought out the memories of her past again? I can't really say if she also remembered about the promise Utena had made her because her behaviour later on didn't reveal much. Unlike Utena, I think she might have remembered, but she simply ignored it as she had lost all hope.
And then there's episode 34 (my favourite, hehe). Here are the last two lines of that episode:

Anthy:  I was looking at your face while you slept.
Anthy:  Who are you?

If Anthy hadn't remembered about the promise Utena had made her then this quote suggests that she herself was starting to remember it at this point. That's one way to interprete it. Or maybe she knew all along and asked that out of malice, knowing very well who Utena was but seeing what had become of her (the previous episode, remember?) she wanted to make her suffer for not keeping her promise. Or perhaps she still had a small hope that Utena would keep her promise (I don't really believe this one though). Any other possibilities? Most likely.

Rampala wrote:

Anthy is in some sort of peril, her dear brother sweeps in to save the day and although he could be killed and against all odds, saves her and becomes her prince.  At the same time, however, his heroic act gains him the powers of Dios-- the power we hear about endlessly during the series, the power to revolutionize the world, the power of miracles, something eternal, a shining thing, etc.-- and he becomes the prince who makes all girls in the world princesses.

Though the idea is very interesting, I disagree with this theory. I don't think Dios ever could (or tried to) save her because Anthy was his sister. This is somewhat strange, of all the people there was one he couldn't save (Why is that so? This is probably the part where we'd have to go even deeper.)

Another thing is this "Power of Dios", I don't think Dios could have had it in a literal sense, but more like the duelists were the ones to gain that power somehow since during the duelists' time, Dios was no more. Dios was the the manifestation of that power (the "light" of the world that the Witch took away).

Still, the question of his origin remains. Maybe he was just there?

Rampala wrote:

This feeds into my own theory of why Utena is able to even wield the power of Dios in the first place and defeat so many duelists who are skillfully better than her.  That is, she is the only one fighting with Anthy in mind (her well being, that is, and not possessing her as the Rose Bride): the original intent of Dios.

But at this point, isn't Utena's main goal to play the role of her idealized prince? In this sense Anthy as an individual doesn't mean much to Utena; she just needs someone she can save. During episode 12 Utena says to both Wakaba and Tōga that she wants to take back who she was. That is to say, saving Anthy (as such) isn't her most important motive for duelling.

Utena's personality is developing in the series and eventually Anthy as herself becomes very important to her. This progress can be seen most clearly when Anthy attempts to commit suicide, but that was after the episode we're talking about here.

I have also thought that the duelling skills symbolize mental abilities such as self-confidence, concentration, courage etc, and the swords are mysterious tools for channelling or multiplexing these abilities. I think this would explain Utena's victories and also the defeat in episode 11. When it comes to the power of Dios, Utena is able to utilize it because her mind is similar to Dios'.

Perhaps this could also explain some elements of the Black Rose arc.