spasenje

1. rescue; salvation; deliverance
   Taj posao mi je bio pravo spasenje. — That job was a real lifesaver for me.
   Za firmu više nema spasenja. — There's no saving the company anymore.
2. (religious) salvation
   Sveštenik je govorio o spasenju duše. — The priest spoke about the salvation of the soul.

In everyday speech "spas" is more usual for a rescue; "spasenje" sounds more solemn and often religious.