Broly is in the middle of battle with Goku and Vegeta when Frieza shoots an energy beam at your father, hitting him in the chest and killing him

With a smug grin, Frieza is about to yell to Broly about a 'stray beam' when he hears footsteps coming from behind. Looking back, Frieza sees you... Staring in shock and anger at his actions

Frieza: "O-oh dear- It's not what it seems I... I-I was trying to stop a stray beam from hitting your father-!"

Beerus and Whis are there just... Watching the fight Goku and Vegeta are having with Broly