The past tense of scare the bejesus out of is scared the bejesus out of.
The third-person singular simple present indicative form of scare the bejesus out of is scares the bejesus out of.
The present participle of scare the bejesus out of is scaring the bejesus out of.
The past participle of scare the bejesus out of is scared the bejesus out of.