"This phrase, "kulla cheyy fi l-samaawaat sakat wa gaʼad saakit misil nuss saaʼa," is from the Arabic translation of the Bible, specifically Revelation 8:1.
It translates to:
"When the Lamb opened the seventh seal, there was silence in heaven for about half an hour."
kulla cheyy: everything, all things
fi l-samaawaat: in the heavens, in the sky
sakat: was silent, became silent
wa gaʼad saakit: and remained silent, and was still
misil nuss saaʼa: like half an hour, for about half an hour"
