far be it from

far be it from (one) to (do something)

It is not one's place to do or say some particular thing. The phrase is often used as an introduction before saying or doing that very thing. Far be it from me to tell you how much to work on this report, but do you really think it's thorough enough? I think we need to believe what Shirley's saying—far be it from her to lie. If they want to give me a raise for doing the same amount of work, then hey, far be it from me to deprive them of the opportunity.
See also: far, to
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

far be it from (someone)

Used to deflect responsibility for making a statement that might not be received well: Far be it from me to criticize, but I find your handwriting to be very sloppy.
See also: far
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
See also: