Reading the definition of Zoroastrianism in different places seems to imply a belief in tw "gods" with one being good (creator) and one being evil (destruction), even though modern people claim that it is monotheistic. In any case, people living in a society have been influenced by that society in the way they think and act, as we see nowadays. However, the statement as you give it or, as places like Wikipedia seem to try to imply, that Zoroastrianism influenced the foundation of Judaism is incorrect.

Since the Jews were part of the Persian Empire (as in the time of Purim or in Bavel in the time of the gemora), then there would have been influence in the same way that we are influenced by the nonJews today. However, since the Jews were not under the influence of the Persian Empire before Persia conquered Bavel (after the destruction of the first Temple), Zoroastrianism could not have had any influence on the Jews before then. Thus they had no influence on the inception of Judaism or any other point in Jewish history until then.


While it is theoretically possible that a dualistic religion arose during the 292 years between the flood and the birth of Avraham or during the 752 years before the Bnei Yisrael went down to Egypt, They would not have had any influence on them during that time.

[Wikipedia](http://en.wikipedia.org/wiki/Zoroastrianism)

> In Zoroastrianism, the creator Ahura Mazda is all good, and no evil
> originates from him. Thus, in Zoroastrianism good and evil have
> distinct sources, with evil (druj) trying to destroy the creation of
> Mazda (asha), and good trying to sustain it. While Ahura Mazda is not
> immanent in the world, his creation is represented by the Amesha
> Spentas and the host of other Yazatas, through whom the works of God
> are evident to humanity, and through whom worship of Mazda is
> ultimately directed.
> 
> 
> Zoroastrians believe that there is one universal, transcendent,
> supreme god, Ahura Mazda, or the "Wise Lord". (Ahura means "Being" and
> Mazda means "Mind" in Avestan language).[8] Zoroaster keeps the two
> attributes separate as two different concepts in most of the Gathas
> and also consciously uses a masculine word for one concept and a
> feminine for the other, as if to distract from an anthropomorphism of
> his divinity. Some Zoroastrians claim Ahura Mazda as the uncreated
> Creator to whom all worship is ultimately directed, thereby
> formulating a panentheistic faith with a transcendent divinity, widely
> believed to have influenced the theology of Isma'ilism.[9] Other
> scholars assert that since Zoroastrianism's divinity covers both being
> and mind as immanent entities, it is better described as a belief in
> an immanent self-creating universe with consciousness as its special
> attribute, thereby putting Zoroastranism in the pantheistic fold where
> it can be easily traced to its shared origin with Indian
> Brahmanism.[10][11] In any case, Ahura Mazda's creation—evident is
> widely agreed as asha, truth and order—is the antithesis of chaos,
> which is evident as druj, falsehood and disorder. The resulting
> conflict involves the entire universe, including humanity, which has
> an active role to play in the conflict.[9]



 and [Zoroastrianism](http://www.religionfacts.com/zoroastrianism/index.htm)

The Zoroastrian concept of God incorporates both monotheism and dualism. In his visions, Zarathustra was taken up to heaven, where Ahura Mazda revealed that he had an opponent, Aura Mainyu, the spirit and promoter of evil.