Well the Christian vs. Jew thing goes back close to 2000 because the Jews killed Jesus (which of course isn't even true) but the Muslim vs. Jew goes back nearly 1400 years and if you just dial that back slightly to Arab vs. Jew you could easily go back nearly 4000 years. That's some serious history of hate right there.
Care to parse this a little more? It doesn’t really accord with my understanding of contemporary theses regarding those two “populations” (where “Jew” is a
relatively recent Roman Imperial-period designation for, vaguely, Yahwist peoples; and “Arab” even more recently came to describe “users of the liturgical abjab”, versus “the semi-discontinuous mobile desert tribes of the peninsular Near East”).
Certainly there was plenty of conflict (and strategic alliance) between Yahwist and their neighbors in pre- and mid-Kingdoms periods, but the bulk of that concerned Egyptian (New Kingdom, Intermediate/Kush-ite, and even Ptolemaic), Akkadian, Assyrian—all Semitic peoples, but distinctly
not “Arabic”—as well as Persian/Achaemenid (and thus Indo-European) incursions. Moreover, the Yahwist city-states didn’t really emerge as a distinctly other-than-Canaanite (from which milieu they emerged) nation until roughly 2700-2500 years ago.
Even “2000 years” for “Christian vs Jew” seems to stretch
a bit. The early medieval period seems (just as with Christian vs Muslim) to be the more defensible locating of the “origins” of these conflicts, writ large or semi-global; while “Jew vs Muslim” is more complicated, but not really tenable past 1300 years ago (and I would argue this latter “versus” was reframed enough by colonial divestment and Zionism to be a totally different discourse now than 150 years ago).