The fire blazed up and warmed all of us.
•As the fire blazed up, we moved away from the fireplace.
2. Fig. [for trouble, especially violent trouble] to erupt suddenly. •The battle blazed up again, and the fighting started to become fierce.
•As the battle blazed up, the cowards fled into the hills.
1) вспыхнуть
the old conflict blazed up again - старый конфликт вновь разгорелся
2) рассердиться; разразиться гневом
the old conflict blazed up again - старый конфликт вновь разгорелся