YOU SAID:

I will win this battle if I have to

INTO JAPANESE

私がする必要がある場合、私はこの戦いに勝ちます

BACK INTO ENGLISH

I will win this fight if I need to

INTO JAPANESE

必要ならこの戦いに勝つ

BACK INTO ENGLISH

Win this battle if necessary

INTO JAPANESE

必要に応じてこの戦いに勝つ

BACK INTO ENGLISH

Win this battle if necessary