My husband yelled at our kid and the me

Me and my husband have 3 kids under 6. The twins are 5 and our youngest is 3. My husband has a lot of mother based childhood trauma. Majority of his family caused him trauma but his mom is why he is the way he is. He's a good husband and father. Sometimes his trauma causes him to get snappy. My husband has a fear of fire. His left side of his body is burnt from the neck down. It involves his abuse from his mom. We were at my parents house yesterday having a bonfire. My husband usually sits far away when we are having a bonfire. Our kids kept asking him to come but he said no thanks. I was teaching the twins to roast marshmallows. My 3 year old fell and hit her head so I got up to help her. I didn't realize my 5 year old caught her marshmallow on fire and ran to show my husband. He yelled so loudly at her it scared her. He yelled "NO!" And backed away. It made her cry. He walked off to calm down. He did eventually apologize. I told my husband I didn't like him yelling at her like that. It scared her. He said he apologized already and I know how he is with fire. I said that he can't make his trauma our kids trauma. So he apologized again. I told him that he really did scare her and he said "I fucking get it!" Which upset me. I said I didn't appreciate him yelling at me and he said he keeps apologizing and now I'm being annoying. I said he can't just hurt my feelings. He just went to the bedroom and asked me to leave him alone

Edit: To call me emotional abusive when you don't know me is beyond fucked up and offensive to people who have been abused. I also have trauma but one thing I've always said is I will never make my trauma my kids trauma. I expect the same from my husband. My family always has bonfires and kids enjoy them. Part of being a parent is putting your feelings aside to make your kids happy. Which is what we did. He wasn't sitting near the fire. The point is he scared our daughter and thinks everything can be fixed with an I'm sorry and when I tried to make him realize the gravity of what he did he got angry at me. That's the whole point