The pope appeared particularly moved by one drawing by a boy depicting a child first swimming in a sea of blood and then swimming in a blue-coloured sea, video released by the Vatican showed.
Another drawing showed a tank and stick figures shooting at each other while one more depicted two children running away from danger hand-in-hand.
A dozen flew out of Lesbos on the pope’s plane when he visited a refugee camp on the Greek island in April. The others arrived in Rome later.
The lunch took place at the Santa Marta residence, a guest house inside the Vatican where the pope has chosen to live instead of the spacious papal apartments used by his predecessors in the Vatican’s Apostolic Palace.