Lity (Orthodox Vespers)
The Lity or Litiyá (
At vespers, after the Prayer at the Bowing of Heads, the procession commences: the clergy, including a
...For the salvation of the people; for the [governmental authorities]; for the clergy; for all afflicted Christian souls desirous of aid; for this city, the country and all Christians living therein; for our deceased fathers and brethren; for deliverance from famine, epidemics, earthquake, flood, fire, the sword, the invasion of barbarians and civil strife....". 
"Lord, have mercy" is sung multiple times after each petition, and this is followed by the priest reciting a prayer summarizing the petitions.
After this, the priests and deacons proceed to the artoklasia table which will have been placed in the center of the nave, all others return to their usual places, and vespers continues as usual with the
Occasionally the lity is held outdoors. In places it is the custom to process around the church, the first and fifth intercessions being sung in front of the entrance and the other three intercessions being sung at each of the other three sides. For special festivity or on other occasions, e.g., or in times of public calamity, the lity may be held in fields (in case of famine) or in public squares or city halls,  in which instance the procession that otherwise would be to the narthex of the church continues to wherever the lity is held.