Miànduì tūfā qíngkuàng, tā méiyǒu jīnghuāng-shīcuò.
Facing the emergency, he did not panic.
Tips
usage
Often used in the negative to praise composure: 他没有惊慌失措 (he didn't panic). It's a compliment to say someone stayed calm when others would have been 惊慌失措.