fawarabbika
So by your Lord
REM – prefixed resumption particle fa + P – prefixed preposition wa (oath) + N – genitive masculine noun + PRON – 2nd person masculine singular object pronoun ka
Root Link: ر ب ب
lanasalannahum
surely We will question them
EMPH – emphatic prefix lām + V – 1st person plural imperfect verb + EMPH – emphatic suffix nūn + PRON – 3rd person masculine plural object pronoun Ha
Root Link: س ا ل