Supplication in buddhist practice

Does any Buddhist practice consists of supplication, or is there too much merit being exchanged for that? > Supplication (also known as petitioning) is a form of prayer, wherein > one party humbly or earnestly asks another party to provide something, > either for the party who is doing the supplicating (e.g., "Please > spare my life.") or on behalf of someone else (e.g., "Please spare my > child's life.").