Deuteronomy 1:30
"The LORD your God which goeth before you, he shall fight for you, according to all that he did for you in Egypt before your eyes;"
Cross References (ranked by relevance)
The LORD shall fight for you, and ye shall hold your peace.
In what place therefore ye hear the sound of the trumpet, resort ye thither unto us: our God shall fight for us.
Nay, in all these things we are more than conquerors through him that loved us.
What shall we then say to these things? If God be for us, who can be against us?
And all these kings and their land did Joshua take at one time, because the LORD God of Israel fought for Israel.
Ye shall not fear them: for the LORD your God he shall fight for you.
The LORD of hosts is with us; the God of Jacob is our refuge. Selah.
With him is an arm of flesh; but with us is the LORD our God to help us, and to fight our battles. And the people rested themselves upon the words of Hezekiah king of Judah.
And took off their chariot wheels, that they drave them heavily: so that the Egyptians said, Let us flee from the face of Israel; for the LORD fighteth for them against the Egyptians.