The Lord's Prayer is the prayer Jesus taught his disciples as recorded in Matthew 6:9-13 and Luke 11:2-4 of the Christian New Testament. Jesus used the prayer as an example of how to pray.
Although many people repetitively recite "The Lord's Prayer" for good luck and safety, Jesus instructed his disciples not to pray repetitively only a couple verses before the instance of the prayer in Matthew 6:7. By instructing his disciples to not heap up empty phrases in prayer, Jesus was both prohibiting mindless, repetitive prayer and setting the stage for his example of prayer that followed. This example is what is known as "The Lord's Prayer," although it is not like his own actual prayer in John 17.