rabbahum
their Lord
N – accusative masculine noun + PRON – 3rd person masculine plural object pronoun Ha
Root Link: ر ب ب
bihim
about them
P – prefixed preposition bi + PRON – 3rd person masculine plural personal pronoun him
Root Link: ب
lakhabīrun
(is) surely All-Aware
EMPH – emphatic prefix lām + N – nominative masculine singular indefinite noun
Root Link: خ ب ر