Rabbi Zidni 'ilma

(20:114) وقُلْ ربِّ زِدْنِي عِلْماً

ربِّ	قُلْ	و
منادى مضاف لياء المتكلم المحذوفه	فعل امر	عطف
Evocation (Calling out, hidden “oh”) Rabb is connected to pronoun “my” (which has been dropped) to form “my lord”. The “my” pronoun can be dropped because nasb pronouns are allowed to be omitted. The indication of the drop is with the kasra on "ب"	second person command verb (active) the object of the verb is the rest of the sentence	conjunction

عِلْما	زِدْنِي

وعملا ً مفعول به ثان اؤ تميز	فعل امر والنون للوقاية والياء مفعول به اوٌل
Second object to the command verb تميز is a noun that removes the ambiguity or vagueness	Command verb (Active) The “nun” is the “nun” of protection (because it protects the end of the word from any change. It doesn’t hold any meaning) “ya” (meaning “my”) is the first object of the command verb

Meaning: and say: My Lord! Increase me in knowledge.

Source: Irab-ul-Quran - Muhuddin Darwish