You were right, i googled it. It is Hebrew. Here's the lyrics:
bemitati kvar shavuot
bikashti et sheahava nafshi
velo metzaativ
chipasti bein kol rechovot hair
hameleat shkarim hazot
velo metzaativ
matzeuni hashomrim hasovevim bair
.
ach ahuvi, od lo matzati oto
ach lo arpe mimeno ad sheavio
...