Arab countries have attempted to invade Israel many times and Israel has defended itself at its borders using a professional army that obeyed the laws of war.

Israel has compulsory military service which means that its population is militarily trained and puts on a uniform and obeys the military chain of command when it goes to fight. It does not hide illegal (out of uniform, no military structure or disciple) combatants in civilian populations nor place heavy weaponry next to apartment blocks.

It is precisely because no one else did or would defend Israel if it was invaded that Israel maintains such a large and powerful military (more tanks than all EU countries combined).

Moreover, Russia has not threatened to exterminate the Ukranians like the Arab armies threatened to Israeli Jews. It wants to integrate them.

Surrender is a very reasonable option for Ukraine - it has lived under Russian control for most of the last 1000 years and has not done so badly out of it.
Surrender was never an option for Israel.