setback of epic proportions

Translations
неудача эпических масштабов
Losing the contract was a setback of epic proportions for the small business.
Потеря контракта была неудачей эпических масштабов для малого бизнеса.
Definitions
A setback of epic proportions refers to a very large or significant obstacle, failure, or problem that greatly hinders progress or success, often on a dramatic or overwhelming scale.
Words
setback

noun
неудача
of

preposition
с
epic

adjective
эпических
proportions

noun
масштабов