The only prayer God hears from the unsaved is the prayer of repentence and the acceptance of His free gift of salvation through Jesus..
1 Samuel 8:18 And ye shall cry out in that day because of your king which ye shall have chosen you; and the LORD will not hear you in that day.
Isaiah 1:15 And when ye spread forth your hands, I will hide mine eyes from you: yea, when ye make many prayers, I will not hear: your hands are full of blood.
Isaiah 59:2 But your iniquities have separated between you and your God, and your sins have hid his face from you, that he will not hear.
Psalm 66:18 If I regard iniquity in my heart, the Lord will not hear me:
Proverbs 28:9 He that turneth away his ear from hearing the law, even his prayer shall be abomination.
Jeremiah 7:16 Therefore pray not thou for this people, neither lift up cry nor prayer for them, neither make intercession to me: for I will not hear thee
Jeremiah 11:14 Therefore pray not thou for this people, neither lift up a cry or prayer for them: for I will not hear them in the time that they cry unto me for their trouble.
Lamentations 3:8 Also when I cry and shout, he shutteth out my prayer.
Lamentations 3:44 Thou hast covered thyself with a cloud, that our prayer should not pass through.
1 Peter 3:12 For the eyes of the Lord are over the righteous, and his ears are open unto their prayers: but the face of the Lord is against them that do evil.
John 9:31 Now we know that God heareth not sinners: but if any man be a worshipper of God, and doeth his will, him he heareth.
Proverbs 15:8 The sacrifice of the wicked is an abomination to the LORD: but the prayer of the upright is his delight.
Proverbs 15:29 The LORD is far from the wicked: but he heareth the prayer of the righteous.