Lull (one) into a false sense of security American British cliché
To persuade one to feel safe but still exist some threats or dangers
Don't let the weakness of your opponent lull you into a false sense of security. They may counter-attack at any moment of the match.
Getting fully vaccinated lulled many people into a false sense of security, in reality, some of them got covid 19 again after all.
I think the first victory in English Rhetoric Competition has lulled her into a false sense of security and made her neglect the practice.
The verb "lull" should be conjugated according to its tense.
The excitement and danger caused by taking part in activities, especially sports or entertainments
Watching Formula One gives us plenty of thrills and spills.