Squeeze the oranges to get approximately 2 cups of juice. Strain the juice and keep aside.
Take orange juice and sugar in a pan and mix well until the sugar dissolves
Add lemon juice into it and give a good mix.
Take ice cubes and one orange slice in each glass and pour the citrus juice ( orange+lemon+sugar) equally in both glasses.
Finally add chilled soda to each glass and garnish with cherries.