See this passage explained in the notes at Matthew 6:9-13.

And he said unto them,.... That is Jesus, as the Syriac and Persic versions express, who directed his speech to all the disciples; for though but one of them addressed him, it was in the name of the rest: and besides, the instructions Christ was about to give concerned them all, even those that heard them before, and those that had not:

when ye pray, say, our Father which art in heaven, hallowed be thy name, thy kingdom come, thy will be done, as in heaven, so in earth; the last petition is left out in the Vulgate Latin; See Gill on Matthew 6:9, Matthew 6:10.

And he said unto them, When ye pray, say, {1} Our Father which art in heaven, Hallowed be thy name. Thy kingdom come. Thy will be done, as in heaven, so in earth.

(1) A form of true prayer.

11:1-4 Rebuking the Pharisees

SUMMARY OF LUKE 11:

Teaching the Disciples to Pray. Parable of the Three Loaves. Earnestness in Prayer. The Charge That Jesus Cast Out Demons by the Aid of Beelzebub. The Sign of Jonas. Dining with a Pharisee. The Pharisees and Lawyers Denounced.

Praying in a certain place. Luke neither tells where nor when.

Teach us to pray. Mt 6:9-13 gives the Lord's prayer, but does not say that the prayer was taught in response to a request. See the notes on Matthew.

11:2 When ye pray, say - And what he said to them is undoubtedly said to us also. We are therefore here directed, not only to imitate this in all our prayers, but to use this very form of prayer. Mt 6:9.

Margin Thy kingdom

See Scofield Note: "Mt 3:2"

2-4. (See on [1633]Mt 6:9-13).

11:1-4 Lord, teach us to pray, is a good prayer, and a very needful one, for Jesus Christ only can teach us, by his word and Spirit, how to pray. Lord, teach me what it is to pray; Lord, stir up and quicken me to the duty; Lord, direct me what to pray for; teach me what I should say. Christ taught them a prayer, much the same that he had given before in his sermon upon the mount. There are some differences in the words of the Lord's prayer in Matthew and in Luke, but they are of no moment. Let us in our requests, both for others and for ourselves, come to our heavenly Father, confiding in his power and goodness.