It was fortunate they could rely on their hosts' discretion.

I know I can rely on your discretion, my boy.

Besides, he was a captain, too-she could rely on his discretion.

I know I can rely on your discretion in this matter.

And remember, I rely absolutely on your discretion in this matter.

Of course, Senator, and you may rely on our discretion.

I can rely on your discretion, for obvious reasons.

I know that I can rely on your discretion not to share any of this.

I trust I can rely on your absolute discretion, for the next few hours at any rate.

"Under the circumstances, I believe we can rely on your discretion," he said.