A weekend retreat on the theme "Lord, teach us to pray" is being held from Friday at 7 p.m. till Sunday after lunch, at Manresa Retreat House, Victoria, Gozo. The retreat, which will be delivered in Maltese, will be conducted by Rosaline Scicluna, Mary Xuereb, Fr Anthony Cilia, SJ, and Fr V. Degabriele, SJ.