His opponents were professional soldiers, and they had met unexpected resistance.

The grasping hand was stayed by an unexpected resistance; I tugged again, and up it came, still heavy.

The poorly armed inhabitants showed unexpected resistance to the attack by fighting back.

We cannot afford to have our attacks become stalled or slowed by unexpected resistance.

When there was unexpected resistance, the only alternative was terror.

"I have been told that you have met with some unexpected resistance."

What if the forces within the ship were encountering the same unexpected resistance?

They ran into unexpected resistance the first day.

But as a dividend of the quest for peace, it has run into unexpected resistance.

Shocked, the others halted, then scrambled to run, horrified by this unexpected resistance.