This is the 7325th most frequent Turkish word.
filistinliye
"Filistinliye" means "to the Palestinian" in English.
"Filistinliye" in this sentence is in the dative case, indicating the indirect object (to whom the book was given).
Bu kitabı Filistinliye verdim.
I gave this book to the Palestinian.
"Filistinliye" here specifies the recipient of the assistance, using the dative case to indicate action directed toward someone.
Filistinliye yapılan yardımları dosyada listeledik.
We listed the aids provided to the Palestinian in the file.
"Filistinliye" is used to specify an encounter (dative case), indicating meeting or coming across.