Proverbs 25:8, Go not forth hastily to strive, lest thou know not what to do in the end thereof, when thy neighbour hath put thee to shame.
If you find you must intervene in strife, find the right time, go to the Lord in prayer and seek God's wisdom.
Go to his house of wisdom and you will find prudence dwelling there. God will give you the tools you will need to do it right.
As it reminds us in Proverbs 15:23, a word spoken in due season, how good is it!
But due season means the right timing!