A strain relief and cable retention assembly for retaining a cable to a casing includes an anchor made of a flexible material. An internal bore along an axis of the anchor is sized to fit an outer jacket of the cable. Tabs extend away from the bore along axes perpendicular to the axis of the bore. A plate made of a stiff material extends along the tabs of the anchor. A section of the anchor passes through the plate such that the plate rests flat against the tabs between the tabs and a face of a casing. Reinforcing fibers from the cable are tied around the plate and the tabs, distributing stress from the cable to the plate and casing.