The invention relates to a textile surface for at least partially absorbing electromagnetic waves. The textile surface comprises textile elements, such as threads or fibers, of at least first and second types. The textile elements of the first and second types have electrical-conduction properties. Each textile element of the first type comprises a synthetic-material core coated with a first metal. The textile elements of the second type are made of a second metal. The invention also relates to a textile material comprising at least two textile surfaces, and to a protective device comprising a textile surface or a textile material.