YOU SAID:
I've told you that you don't need to fight my battles.
INTO JAPANESE
あなたは私の戦いと戦う必要がないと言った。
BACK INTO ENGLISH
You said you don't have to fight my fight.
INTO JAPANESE
あなたは私の戦いと戦う必要はないと言った。
BACK INTO ENGLISH
You said you don't have to fight my fight.
That didn't even make that much sense in English.