Decay processes in solid gadolinium and europium after 4d to 4f resonance excitations have been studied by means of Auger and photoelectron spectroscopy. Several photon energies covering the whole resonance region were used. Excitations corresponding to the narrow absorption peaks at the low-energy side of the main resonance were found to decay mostly via autoionization involving 5p or 5s orbitals. However, the N_4,5O_2,3N_6,7 and N_4,5N_6,7N_6,7 resonance Auger processes were also found to play a significant role. After excitations corresponding to the main 4d to 4f giant resonance the autoionization leading to a 4f^-1 one-hole state proved to be the strongest decay channel although the N_4,5O_2,3N_6,7 and N_4,5N_6,7N_6,7 normal Auger transitions were also observed.