إِنَّا لِلَّٰهِ وَإِنَّا إِلَيْهِ رَاجِعُونَ
cannot translate!
edit: thanks @ comments below, need to manually switch to Arabic
Switch to Arabic manually and it works fine.
> We belong to God and to Him we shall return
It was likely copied.
> very uncommon in daily use. I can imagine that it is a quote from the Quran
They are common in religious texts.