Christianity believes in a dualistic, independently powerful devil/satan. He can do things against what they call god.
We don’t have such a concept; evil was created by Hashem and does not function autonomously. Demons don’t have bechirah, and neither does the sitra achra. We still want to keep away from it, because it is against the revealed will of Hashem, kedushah, and l things that are good for us. This idea is explained in detail in the kisvei arizal, and the tanya in a few places. The ramchal mentions it in derech aitz chaim and in the hakdoma to kalach pischei chochma, and reb elchonon vasserman in his ikvesa demieshicha oage 263, quotes it as well. Chazal use the term “maysoh soton” in a few places, such as the vision that the soton made by har Sinai that Moshe was dead as part of the nisayon of the egel hazahav. Devarim 13:4 says that a navi sheker may produce a miracle; that miracle is a maysoh soton, a challenge that we must withstand, just like any other yatzer hora.
Ultimately everything is from Hashem, as ein ohd milvado – nothing truly exists besides Hashem, but the same way we keep away from physical fire, even though there’s nothing besides Hashem, we keep away from negative spiritual realities, be they aveiros, shedim, ruchos raos, or maysoh soton.
Where does the empty wagon advocate kochi veotzem yodi? I went through it many times, and I have not seen anything remotely resembling such an attitude.
Empty wagon quotes regarding the 6 day war are on pages 609-613. There’s a pretty clear index…you don’t need to search through the pages to find topics; they’re clearly labeled.