rahk hashem (רק הש×)
There is only God = yesh elohim echad (יש אלוקים אחד)
Jehovah, aka Yahweh, YHVH, et al. is a transliteration of יהוה from the Hebrew bible. This is only one of several names used for God in the Hebrew bible. There is zero evidence that any god(s) exists, so I would have to say no.
nes hashem (× ×¡ ה׳)
ha'am hanivchar (העם ×”× ×‘×—×•×¨)
eifo hashem? (?איפה ה׳)
Elohim noshem
your god your god = elohecha elohecha (אלוקך אלוקך)
Hebrew doesn't have a subjunctive mood, but instead you could say "God is glorified," which is Hashem nehedar (ה׳ × ×”×“×¨)
The Egyptians did not have a symbol for the Hebrew God. They only wrote about the Hebrews in one place, and didn't mention their God.
In Hebrew? In Biblical Hebrew it would be Elohenu Eloah ehadh. Or you could say the Shema which is Sh'ma Yisrael Adonai Elohenu Adonai Ehhadh.
God is with us = "ha shem imanu" (ה׳ ×¢×ž× ×•)
eved hashem (עבד ה׳), which also means "servant of God" (in Hebrew, there's no distinction between slave and servant).