lull somebody into something

Từ điển Oxford Advanced Learner 8th

ˌlull sb ˈinto sth derived
to make sb feel confident and relaxed, especially so that they do not expect it when sb does sth bad or dishonest
•His friendly manner lulled her into a false sense of security (= made her feel safe with him when she should not have).
Main entry: ↑lull_derived