أَنِ اعْبُدُوا اللَّهَ رَبِّي وَرَبَّكُمْ _worship Allah, my lord and your lord

وَإِذْ قَالَ اللَّهُ يَا عِيسَى ابْنَ مَرْيَمَ أَأَنْتَ قُلْتَ لِلنَّاسِ اتَّخِذُونِي وَأُمِّيَ إِلَٰهَيْنِ مِنْ دُونِ اللَّهِ ۖ قَالَ سُبْحَانَكَ مَا يَكُونُ لِي أَنْ أَقُولَ مَا لَيْسَ لِي بِحَقٍّ ۚ إِنْ كُنْتُ قُلْتُهُ فَقَدْ عَلِمْتَهُ ۚ تَعْلَمُ مَا فِي نَفْسِي وَلَا أَعْلَمُ مَا فِي نَفْسِكَ ۚ إِنَّكَ أَنْتَ عَلَّامُ الْغُيُوبِ

And behold! Allah will say: "O Jesus the son of Mary! Didst thou say unto men, worship me and my mother as gods in derogation of Allah'?" He will say: "Glory to Thee! never could I say what I had no right (to say). Had I said such a thing, thou wouldst indeed have known it. Thou knowest what is in my heart, Thou I know not what is in Thine. For Thou knowest in full all that is hidden. 

Chapter 5 The Table Spread سورة المائدة - Al-Maeda: Verse 117

مَا قُلْتُ لَهُمْ إِلَّا مَا أَمَرْتَنِي بِهِ أَنِ اعْبُدُوا اللَّهَ رَبِّي وَرَبَّكُمْ ۚ وَكُنْتُ عَلَيْهِمْ شَهِيدًا مَا دُمْتُ فِيهِمْ ۖ فَلَمَّا تَوَفَّيْتَنِي كُنْتَ أَنْتَ الرَّقِيبَ عَلَيْهِمْ ۚ وَأَنْتَ عَلَىٰ كُلِّ شَيْءٍ شَهِيدٌ

"Never said I to them aught except what Thou didst command me to say, to wit, 'worship Allah, my Lord and your Lord'; and I was a witness over them whilst I dwelt amongst them; when Thou didst take me up Thou wast the Watcher over them, and Thou art a witness to all things.