And if you gentlemen will excuse me for a minute, I have a private call to make.

Now if you gentlemen will excuse me I need to go find my new assistant.

If you gentlemen will excuse me, I'd like to check the progress of the work in hand.

"If you gentlemen will excuse me, I have a business to run."

"If you gentlemen will excuse me, I have other clients."

"Now if you gentlemen will excuse us, we'll close up shop and go home."

If you gentlemen will excuse me, I should be back in time for dessert.

"If you gentlemen will excuse me, I have a couple of things to do to get supper onto the table."

If you gentlemen will excuse me, I'll go see to that.

"Now, if you gentlemen will excuse me, I must get back to my work."