Phillips had 10 points (4-5 FG, 0-1 3Pt, 2-2 FT) and four rebounds over 14 minutes during Wednesday's 110-94 loss to the Hawks.
The Bulls recalled Phillips from the G League's Windy City Bulls on Saturday.
The Bulls assigned Phillips to the Windy City Bulls of the G League on Friday.
Phillips isn't part of the starting lineup for Wednesday's game against the Wizards.
Phillips will start in Monday's game against the Hornets, Sam Perley of the Hornets' official site reports.
Phillips produced 10 points (4-5 FG, 1-1 3Pt, 1-1 FT), one block and one steal in 12 minutes during Monday's 122-121 victory over Toronto.
Phillips (illness) is available for Tuesday's game versus the Wizards.
Phillips (illness) is probable for Tuesday's game against the Wizards.
Phillips (illness) has been ruled out for Saturday's game against the Grizzlies, Cody Westerlund of 670TheScore.com reports.
Phillips is listed as questionable for Saturday's game versus the Grizzlies due to an upper respiratory illness.