Is there any worship or du'a that makes memorizing the qur'an easier?

I'm keen to memorize the qur'an, beside the fact that it would need time and efforts which I'm willing to spent. I was asking myself if there's any known supplication or tradition of such or a prayer of what ever that help us in asking Allah to help us memroizing it. Is there any du'a or worship one could do to better or easier memorize the qur'an?