Sayyiduna Sa’d bin Abi Waqqas (may Allah be pleased with him) says that I heard Sayyida Khawla bint Hakim Salmiyyah (may Allah be pleased with her) narrate that the Messenger of Allah (peace and blessings be upon him) said: Whoever stops at a place and recites this supplication: "A’udhu bikalimatillahi at-tammati kulliha min sharri ma khalaq." (I seek refuge in all the perfect words of Allah from the evil of whatever He has created), then nothing will harm him until he departs from that place.