I beg to differ

US /aɪ bɛɡ tə ˈdɪfər/
UK /aɪ bɛɡ tə ˈdɪfər/
"I beg to differ" picture
1.

me permito disentir, no estoy de acuerdo

a polite way of saying that you do not agree with someone

:
You say it's a good idea, but I beg to differ.
Dices que es una buena idea, pero me permito disentir.
He claimed the report was accurate, but I beg to differ.
Afirmó que el informe era preciso, pero me permito disentir.