Ms Orner accused the protesters of trying to delegitimise Israel by ousting her from the event, which was called Writing Today in the Mediterranean Region: Exchanges and Tensions.
She said: "I understand that it is not personal against me, but it greatly upset me because I see it as systematic – not against me, but against Israel.
“This time I chose not to keep quiet because I see these cancellations as a move against the existence of the state of Israel."
Born in Germany, Ms Orner fled to Israel after the Holocaust but has lived in France as well. She has translated the work of Yehuda Amichai and compiled an anthology of translations of Israeli women.
The cancellation comes less than a year after a conference in Luxembourg was cancelled because of objections over Ms Orner participating.