Digimon Life Energy

From Wikimon

Digimon life energy (デジモンの生命エネルギー Dejimon no Seimei Enerugī) is the life force of a Digimon. The concept was newly introduced in Digimon Savers and is additional to the other components of Digimon. It has been represented as yellow luminous particles which disperse when a Digimon is permanently deleted, or on the verge of deletion.

In Digimon Savers, this plays an important role in reviving Belphemon through Kurata using Gizmon to absorb this energy from deleting Digimon.