Dear Ozerof,
It refers to St. Mary's birth to Jesus Christ. Literally it says She gave birth to Role Model of Love. It is written in Geez language which is mainly used in the Ethiopian Orthodox Church.
The second line is, I reckon, the year in the Ethiopian calendar (Juliana Calendar).
The last line is the same year in European (Gregorian) calendar.
I believe this answers your question. If not contact me
Best,
Muluken