Wiktionary
far be it
vb. (context idiomatic English) A disclaimer stating that the person speaking will not do something.
Usage examples of "far be it".
If they couldn't talk you out of such fallacious attitudes as that, far be it from me to even try.
No, though 'twere as much as my life is worth, far be it from me to fail of keeping my word.
If you are so eager to molder beside him, far be it from me to dissuade you, but I would rather not be included in the party, thank you very much.
Anne's got plenty of faults, goodness knows, and far be it from me to deny it.
If you've managed to reach this stage of your life without having your mind rotted by science fiction potboilers, far be it from me to seduce you to the Dark Side.
I mean, far be it from me, you know, to turn down some lady, you know.