رَبَّنَا إِنَّكَ تَعْلَمُ مَا نُخْفِي وَمَا نُعْلِنُ وَمَا يَخْفَى عَلَى اللّهِ مِن شَيْءٍ فَي الأَرْضِ وَلاَ فِي السَّمَاء

Rabbana innaka ta'lamu ma nukhfi wa ma nu'lin wa ma yakhfa 'alal-lahi min shai'in fil-ardi wa la fis-Sama'

Word By Word: 

Rabbana: Our Lord

innaka: Indeed YOU

ta'lamu: YOU Know

ma: what

nukhfi: we conceal

wa: and 

ma: what

nu'lin: we proclaim

wa: and

ma: what

yakhfa: hidden

'alal: from

ilahi: Allah  

min: any

shai'in: thing

fil: in

ardi: the earth

wa: and

la: not

fis Sama': in the heaven

Translation: O our Lord! Truly Thou dost know what we conceal and what we reveal: for nothing whatever is hidden from Allah, whether on earth or in heaven [14:38]

Tafseer: In Abraham's prophetic mind was the secret and open enmity or contempt which the Children of Israel were to have for the Children of Isma'il (Arabs). He prays to Allah that they may be united in Islam, as indeed they were, except a small remnant.