The phrase "with mutual reliance" can be expressed in different ways while retaining its meaning. It conveys the idea of a mutual support system where both parties rely on each other equally. One way to express this is through the term "interdependence," which implies a relationship where both parties are mutually dependent on each other. The phrase "cooperative partnership" also connotes a similar meaning, emphasizing collaboration and cooperation between two parties. "Collaborative coexistence" is another alternative that conveys the idea of two parties coexisting and working together in harmony. Other related phrases include "shared responsibility," "reciprocal support," and "mutual assistance." All these words denote a relationship characterized by mutual trust, respect, and cooperation.