Apotropaic

Apotropaic magic (from Greek apotrepein "to ward off" from apo- "away" and trepein "to turn") is a type of magic intended to turn away harm or evil influences, as in deflecting misfortune or averting the evil eye. Apotropaic observances may also be practiced out of vague superstition or out of tradition, as in good luck charm (perhaps some token on a charm bracelet), amulets, or gestures such as crossed fingers or knocking on wood. The Greeks made offerings to the averting gods (Ἀποτρόπαιοι θεοί: Apotropaioi Theoi), chthonic deities and heroes who grant safety and deflect evil.

Apotropaic magical rituals were practiced throughout the ancient Near East and Egypt. Fearsome deities were invoked via ritual in order to protect individuals by warding away evil spirits. In ancient Egypt, these household rituals (performed in the home, not in state-run temples) were embodied by the deity who personified magic itself, Heka. The two gods most frequently invoked in these rituals were the hippopotamusiform fertility goddess, Taweret, and the lion-demon, Bes (who developed from the early apotropaic dwarf demon-god, Aha, literally meaning "fighter").

Objects were often used in these rituals in order to facilitate communication with the gods. One of the most commonly found magical objects, the ivory apotropaic wand (see also Birth Tusk), gained widespread popularity in the Middle Kingdom (ca. 1550 - 1069 BCE). These wands were used to protect expectant mothers and children from malevolent forces, and were adorned with processions of apotropaic solar deities. Likewise, protective amulets bearing the likenesses of gods and goddesses like Taweret were commonly worn. Water came to be used frequently in ritual as well, wherein libation vessels in the shape of Taweret were used to pour healing water over an individual. In much later periods (when Egypt came under the Greek Ptolemies), stele featuring the god Horus were used in similar rituals; water would be poured over the stele and—after ritually acquiring healing powers—was collected in a basin for an afflicted person to drink.

...
Wikipedia