qul'nā
We said
V – 1st person plural perfect verb + PRON – 1st person plural object pronoun nā
Root Link: ق و ل
kūnī
Be
V – 2nd person feminine singular imperative verb + PRON – subject pronoun Ya
Root Link: ك و ن
wasalāman
and safe[ty]
CONJ – prefixed conjunction wa (and) + N – accusative masculine indefinite noun
Root Link: س ل م