(informal)used when you are just about to disagree with somebody or to criticize them and you would like them to think that you do not really want to do this（要表示不同意和批评但又希望对方感到自己并非真正想要这样做）
Far be it from me to interfere in your affairs but I would like to give you just one piece of advice.我绝不想干涉你的事，我只不过想给你一个忠告。