Mit Verlaub — by your leave, if you permit
Bei allem Respekt — with all due respect
Das sehe ich anders. — I see that differently.
Da muss ich widersprechen. — I have to contradict you there.
der Einwand — the objection
Widerworte geben — to answer back
Keine Widerworte! — No answering back! This is what the person in charge says to end it.