Mukhtasar Bukhari

Narrated Ibn Abbas (may Allah be pleased with them) that the Prophet (peace and blessings of Allah be upon him) said: "If anyone, when approaching his wife, says these words of supplication: 'In the name of Allah. O Allah! Protect me from Satan and keep Satan away from the offspring You grant us,' then if they are destined to have a child, Satan will not be able to harm him."