The game will be Barca's second visit to South Africa.
Having eased past the Brazilians 3-1 in front of a packed FNB Stadium, Valverde though doesn't think that his team had it easy against the South African champions.
Lionel Messi was left out of the Barcelona squad which lost their unbeaten league run on Sunday to Levante but has travelled with his team-mates.
La Liga's newly crowned champions then doubled their lead on the 19th-minute mark after Suarez was put through in on goal to calmly slot the ball past Sundowns keeper Denis Masinde Onyango to make it 2-0.
Varanasi flyover collapse : Four officials suspended
This bridge is the responsibility of UP State Bridge Corporation and was scheduled to be inaugurated in December 2018. The tragedy is similar to the flyover collapse in Kolkata two years back, when over 25 people were killed.
Barcelona got off to the ideal start thanks to Ousmane Dembele in the third minute. Marc-Andre ter Stegen had to be switched on to keep out Percy Tau and Hlompho Kekana.
More sloppy defending gave Barcelona a third goal on 67 minutes when an interception set up Gomes to fire past substitute goalkeeper Kennedy Mweene.
That feat was last achieved in 1932 by Real Madrid, the arch-rivals of Barca, when the season comprised 18 fixtures compared with 38 now.
Messi was then introduced but was a spectator as Sibusiso Vilakazi pulled one back for Sundowns, getting the better of Jasper Cillessen after managing to stay onside.