give somebody pause
give somebody pause for thought

But still, today's vote of 219 to 203 was enough to give Republican leaders pause.

This news will give pause to almost anyone who lives with a dog.

None of them stopped what she was doing, but most gave pause.

This alone is enough to give most other Arab leaders pause.

A major study published last week, for example, gave some researchers pause.

The thought of a daily battle with the person in the next office has clearly given some people pause.

The thought of walking up to the house through that forest at night gave her pause.

He might also have been given pause by the experience of his predecessor.

They made international news and gave human rights activists pause.

Not long ago a new couple in town threw a party that gave some people pause.