Feigned fleeing or farciful forestalling?

[Boromir88]

Can't be blasting fire, as it's not used again by the White. And one would think that Aragorn the Aged would have remembered/remarked how it was used to breach the walls of Dol Guldur when he sees it again at Helm's Deep.~alatar

Well I don't know if it necessarily has to be "blasting fire" Gandalf is talking about, it could just be some sort of fiery device like Sauron used against Gondor...I could be mistaken, as my memory is a bit vague, but isn't there something about "burning liquid" that Sauron uses?

Because while Gandalf says:

It was by the devices of Saruman that we drove him from Dol Guldur.

This could be a general statement of Gandalf saying Sauron was forced to flee, because of Saruman's devices. It doesn't necessarily mean Saruman physically encountered Sauron and drove him off with a special weapon. We know that's not Sauron's style of leading, he sits in the back (cozy in a nice, big tower):

Denethor laughed bitterly. "Nay, not yet, Master Peregrin! He will not come save only to triumph over me when all is won. He uses others as his weapons. So do all great lords, if they are wise,...~The Siege of Gondor

Also, Gandalf makes mention that his weapons would have possibly driven back the Nine...isn't fire one of their fears? Let's not forget in Unfinished Tales, when the Witch-King came asking for information, Saruman was able to turn him away and keep his true thoughts hidden (at least from the Wikki)...I don't remember if there's any mentioning of a weapon that he used other than his persuasive abilities though.

[Legate of Amon Lanc]

Originally Posted by Boromir88

I could be mistaken, as my memory is a bit vague, but isn't there something about "burning liquid" that Sauron uses?

That was Saruman, too. When the Ents attacked Isengard, huh, and now I don't know what the name of the Ent was in English, something with a beech tree though probably, was hit by this "liquid fire" and Merry or Pippin says that it was a horrible sight.

We know that's not Sauron's style of leading, he sits in the back (cozy in a nice, big tower):

Hey, that's a very good point - well thought!

Also, Gandalf makes mention that his weapons would have possibly driven back the Nine...isn't fire one of their fears? Let's not forget in Unfinished Tales, when the Witch-King came asking for information, Saruman was able to turn him away and keep his true thoughts hidden (at least from the Wikki)...I don't remember if there's any mentioning of a weapon that he used other than his persuasive abilities though.

No, nothing beside his voice and the things he does with it.